Baked Flank Steak with Garlic Butter Green Beans
Tender flank steak roasted to perfection with a fragrant garlic butter sauce, served alongside crisp-tender green beans. This american-inspired beef (low carb, keto) ready in about 35 minutes pairs flank steak, olive oil, minced garlic cloves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 520 calories and feeds 2, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart.
Ingredients
- 12 oz flank steak
- 2 tbsp olive oil
- 3 minced garlic cloves
- 1/4 cup unsalted butter
- 1 lb trimmed and cut into 1-inch pieces green beans
- 1/2 tsp salt
- 1/4 tsp black pepper
Instructions
- Step 1: Preheat oven to 400°F. Season flank steak with salt and pepper on both sides. Heat 1 tbsp olive oil in an oven-safe skillet over medium-high heat until shimmering. Sear steak for 3 minutes per side until browned, then transfer skillet to oven and roast for 8-10 minutes until internal temperature reaches 125°F for medium-rare.
- Step 2: While steak rests, heat remaining 1 tbsp olive oil in a medium skillet over medium heat. Add green beans and sauté for 5 minutes until crisp-tender. Stir in minced garlic and cook for 1 minute until fragrant.
- Step 3: Remove skillet from heat, add butter and stir until melted. Season with salt and pepper, then toss with green beans until evenly coated. Slice steak and serve immediately with green beans.
Frequently asked questions
How long does Baked Flank Steak with Garlic Butter Green Beans take to make?
Total time is about 35 minutes (15 min prep + 20 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Baked Flank Steak with Garlic Butter Green Beans?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep flank steak from drying out.
Can I substitute ingredients in Baked Flank Steak with Garlic Butter Green Beans?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Baked Flank Steak with Garlic Butter Green Beans for a different number of people?
The recipe is written for 2 servings. Multiply each ingredient by (your serving target / 2). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is Baked Flank Steak with Garlic Butter Green Beans low carb?
Yes — this recipe is tagged low carb, keto based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
The flavors were amazing. I'll definitely make this again.
- ★★★★★
Loved it! My family devoured the steak and beans. Easy and delicious.
- ★★★★★
This was my first time cooking flank steak, and it turned out perfect! The garlic butter green beans were a great side.
