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If you’re looking for a hearty, vibrant, and soul-warming weekday meal, this Roasted Butternut Squash, Brussels Sprouts, and Flank Steak Dinner Recipe is an absolute showstopper. It brings together the sweet earthiness of roasted butternut squash, the crisp caramelized edges of Brussels sprouts, and the juicy, tender bite of perfectly seared flank steak, all melded with fragrant garlic butter and fresh thyme. Each bite is a celebration of textures and bold, balanced flavors that make this dish feel both wholesome and downright indulgent. Whether it’s a cozy night in or a small dinner gathering, this recipe is a delightful way to impress without stress.

Ingredients You’ll Need

The image shows a black cast iron pan filled with many slices of cooked beef strips, browned and slightly textured, laid out flat and overlapping each other. Small green herb leaves are scattered on top of the beef, adding a fresh pop of color. The pan is set on a white marbled surface that contrasts with the dark pan and meat. Photo taken with an iphone --ar 4:5 --v 7

These ingredients might seem simple, but each one plays an essential role in crafting the complex layers of taste and texture in this delicious dinner. Fresh produce and smart seasoning ensure every component shines while harmonizing beautifully.

  • Butternut squash (3 cups, peeled, seeded, and cubed): The natural sweetness and creamy texture of roasted squash form the base of this dish.
  • Olive oil (3 tablespoons total): Used for roasting and searing, it adds subtle richness and helps crisp up veggies and steak.
  • Salt and pepper: Simple yet crucial seasonings for bringing out the full flavor of every element.
  • Brussels sprouts (12 oz, trimmed and halved): Their slight bitterness contrasts delightfully with the squash, and roasting caramelizes their edges.
  • Flank steak (1 lb): This cuts beautifully and becomes tender when cooked just right, providing the hearty protein centerpiece.
  • Smoked paprika (1/4 teaspoon): Adds smoky depth to the steak’s seasoning.
  • Chili powder (1/4 teaspoon): Brings a gentle warmth that complements both steak and roasted veggies.
  • Butter (3 tablespoons): Essential for the garlic butter sauce that coats the steak for rich flavor and silky texture.
  • Garlic (5 cloves, minced): Its pungent aroma and savory taste elevate the entire dish.
  • Fresh thyme (1/4 ounce): Offers a fragrant herbal note that ties together the meats and vegetables perfectly.

How to Make Roasted Butternut Squash, Brussels Sprouts, and Flank Steak Dinner Recipe

Step 1: Prepare and Roast the Butternut Squash

Begin by preheating your oven to 400°F. It’s key to peel, seed, and cube the butternut squash into evenly sized pieces to ensure uniform roasting. Toss the squash cubes in a generous drizzle of olive oil with salt and pepper, then spread them in a single layer on a parchment paper-lined baking sheet. Pop these into the oven and roast for about 30 minutes, allowing the edges to brown beautifully while the inside becomes tender and sweet.

Step 2: Roast the Brussels Sprouts

While the squash roasts, get the Brussels sprouts ready by trimming their ends and removing any discolored outer leaves. Slice them in half for maximum caramelization. Toss with olive oil, salt, and pepper in a medium bowl, then spread them on a parchment-lined baking sheet, making sure they aren’t crowded. Roast alongside the squash (or separately if needed) at 400°F for 20 to 30 minutes until they achieve a gorgeous golden-brown edge and a tender bite. The contrasting texture to the squash makes these a star.

Step 3: Season and Sear the Flank Steak

Now for the steak! Pat it dry and season both sides generously with smoked paprika, chili powder, salt, and freshly ground black pepper. Heat a cast-iron skillet over medium heat for a couple of minutes to ensure it’s hot enough for a great sear. Add olive oil, then place the steak in the pan without moving it—this will create that crave-worthy crust—cook for 5 minutes, and then flip it. Reduce the heat to low-medium and cook for another 5 minutes or until your desired doneness (130°F for medium-rare or 145°F for medium). Rest the steak briefly before slicing thinly against the grain.

Step 4: Make the Garlic Butter Sauce and Combine

Use the same skillet—now emptied of steak—to melt butter over low-medium heat. Add the minced garlic and cook just until softened and fragrant, about 1 to 2 minutes. Return the sliced flank steak and fresh thyme to the pan, tossing gently to coat each piece in the luscious garlic butter. Finally, add your roasted butternut squash and Brussels sprouts to warm everything through together on low heat. A final sprinkle of fresh thyme and adjusted seasoning with salt and pepper brings it all home.

How to Serve Roasted Butternut Squash, Brussels Sprouts, and Flank Steak Dinner Recipe

A black cast iron pan contains three sections of food arranged in rows: the top right has medium brown cooked beef strips with a glossy texture, sprinkled with small green herb leaves. The bottom right holds shiny, roasted Brussels sprouts with a mix of dark green and light green colors, some showing slight browning spots. The left side features small orange cubes of roasted butternut squash with a slightly crisp look, also topped with green herb leaves. The pan is set on a dark wooden surface with some fresh herb sprigs around it. photo taken with an iphone --ar 4:5 --v 7

Garnishes

Elevate this dinner with a sprinkle of toasted pumpkin seeds or chopped toasted pecans for extra crunch. A dash of flaky sea salt right before serving adds a lovely pop of texture and flavor. Fresh thyme sprigs not only enhance aroma but bring a beautiful visual appeal that hints at the freshness inside.

Side Dishes

This dish is wonderfully complete on its own, but if you want to round it out, a crisp green salad dressed in vinaigrette brightens the plate and contrasts the richness. Alternatively, creamy mashed potatoes or a wild rice pilaf provide a comforting base that complements the savory steak and roasted veggies.

Creative Ways to Present

For a rustic family-style presentation, serve the steak strips nestled among the mixed roasted squash and Brussels sprouts on a large wooden board or platter. For a more elegant touch, arrange the steak slices fanned out with the vegetables stacked neatly alongside, topped with fresh thyme and a drizzle of pan juices. Using small cast-iron skillets at the table can also impress and keep everything warm.

Make Ahead and Storage

Storing Leftovers

Store any leftovers in an airtight container and refrigerate for up to 3 days. Because the roast vegetables and steak maintain their texture well, reheating gently preserves the flavors beautifully without becoming soggy.

Freezing

You can freeze the roasted vegetables and cooked flank steak separately in freezer-safe containers for up to 2 months. When freezing, cool the components completely before sealing to avoid ice crystals. While texture may soften slightly upon thawing, the taste remains hearty and satisfying.

Reheating

Reheat leftovers on the stovetop over low heat to gently warm without drying the steak. Adding a splash of olive oil or a small knob of butter helps keep everything moist. Avoid microwave reheating if possible, to maintain the best texture of the vegetables and meat.

FAQs

Can I use a different cut of meat?

Absolutely! While flank steak is perfect for its flavor and texture in this recipe, skirt steak or hanger steak also sear well and offer similar results. Just adjust the cooking time to suit the thickness and desired doneness.

How do I know when the steak is cooked perfectly?

Using a meat thermometer helps a lot—130°F means medium-rare, and 145°F is medium, which is the FDA’s safe recommendation. Letting the steak rest before slicing ensures juices redistribute, keeping it juicy and tender.

Can I make this recipe vegetarian?

Yes! Swap the flank steak for hearty roasted portobello mushrooms or marinated tofu slabs. The roasted butternut squash and Brussels sprouts really shine as the vegetable stars of this meal.

What if I don’t have fresh thyme?

Fresh thyme adds a lovely herbal brightness, but dried thyme or rosemary can be good substitutes. Use about one-third the amount of dried herbs as fresh to avoid overpowering the dish.

Is it okay to roast the vegetables together?

Yes! Since both the butternut squash and Brussels sprouts roast at 400°F and have similar timing, you can cook them on separate trays simultaneously. Just keep an eye so nothing overcrowds the pan for optimal caramelization.

Final Thoughts

This Roasted Butternut Squash, Brussels Sprouts, and Flank Steak Dinner Recipe really is one of those dishes that makes you fall in love with cooking all over again. It strikes the perfect balance between simple ingredients and impressive flavors, making it a go-to favorite to share with family and friends. I hope you enjoy making and savoring it as much as I do!

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Roasted Butternut Squash, Brussels Sprouts, and Flank Steak Dinner Recipe

Roasted Butternut Squash, Brussels Sprouts, and Flank Steak Dinner Recipe

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3.9 from 7 reviews

A hearty and flavorful meal featuring perfectly roasted butternut squash and Brussels sprouts paired with tender, spiced flank steak cooked in a garlic butter sauce. This recipe offers a balanced combination of roasted vegetables and seared steak with aromatic herbs, ideal for a satisfying dinner.

  • Total Time: 1 hour 10 minutes
  • Yield: 4 servings

Ingredients

Roasted Butternut Squash

  • 3 cups butternut squash, peeled, seeded, and cubed
  • 1 tablespoon olive oil
  • Salt and pepper, to taste

Roasted Brussels Sprouts

  • 12 oz Brussels sprouts, trimmed and halved
  • 1 tablespoon olive oil
  • Salt and pepper, to taste

Steak and Garlic Butter Sauce

  • 1 lb flank steak
  • 1/4 teaspoon smoked paprika
  • 1/4 teaspoon chili powder
  • 1/4 teaspoon salt (or more to taste)
  • Freshly ground black pepper, to taste
  • 2 tablespoons olive oil
  • 3 tablespoons butter
  • 5 cloves garlic, minced
  • 1/4 ounce fresh thyme

Instructions

  1. Preheat and Prepare Butternut Squash: Preheat your oven to 400°F (204°C). Peel, seed, and cube the butternut squash. Toss the squash in a large bowl with 1 tablespoon olive oil, salt, and pepper until evenly coated.
  2. Roast Butternut Squash: Spread the squash in a single layer on a parchment-lined baking sheet, avoiding overcrowding. Roast on the middle rack for about 30 minutes until tender and lightly caramelized. Remove from the oven and set aside.
  3. Prepare Brussels Sprouts: Trim the ends and remove any yellow outer leaves from the Brussels sprouts. Slice them in half. Toss in a medium bowl with 1 tablespoon olive oil, salt, and pepper.
  4. Roast Brussels Sprouts: Spread them evenly on a parchment-lined baking sheet. Roast alongside the butternut squash in the preheated 400°F oven for 20-30 minutes until tender and crisp on the edges. Remove from the oven.
  5. Season Flank Steak: Pat dry the flank steak and season both sides with smoked paprika, chili powder, salt, and freshly ground black pepper generously.
  6. Heat Skillet and Sear Steak: Preheat a large cast-iron skillet over medium heat for 2 minutes to ensure it is hot. Add 2 tablespoons olive oil and place the flank steak in the skillet. Cook undisturbed for 5 minutes to develop a good sear.
  7. Cook Steak to Desired Doneness: Flip the steak, reduce heat to medium-low, and cook for an additional 5 minutes or longer, depending on your preferred doneness. For medium-rare aim for an internal temperature of 130°F; for medium, 145°F.
  8. Rest and Slice Steak: Remove the steak from the skillet and let it rest briefly on a plate. Then slice against the grain into thin 1-inch wide strips.
  9. Make Garlic Butter Sauce: In the same empty skillet, add 3 tablespoons butter and minced garlic. Cook on medium-low heat for 1-2 minutes until garlic softens and becomes fragrant but not browned.
  10. Combine Steak and Sauce: Return the sliced steak to the skillet with the garlic butter and add fresh thyme leaves. Stir gently on low heat for 1-2 minutes to coat the steak thoroughly with the sauce. Remove from heat.
  11. Warm Vegetables with Steak: Add the roasted butternut squash and Brussels sprouts to the skillet with the steak and garlic butter. Warm everything together over low heat, mixing gently to combine flavors. If skillet is not large enough, do this in batches.
  12. Final Seasoning: Garnish with additional fresh thyme and adjust seasoning with salt and freshly ground black pepper as desired before serving.

Notes

  • Make sure not to overcrowd the vegetables on the baking sheets to ensure proper roasting and caramelization.
  • Resting the steak before slicing helps retain its juices and tenderness.
  • Adjust the chili powder and smoked paprika according to your spice preference.
  • Use a meat thermometer for precise doneness of the steak.
  • This dish pairs well with a simple green salad or crusty bread for a complete meal.
  • Author: Olivia
  • Prep Time: 20 minutes
  • Cook Time: 50 minutes
  • Category: Main Course
  • Method: Roasting
  • Cuisine: American

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