Baked Flank Steak with Garlic Butter Green Beans

By AislePrompt Editorial · Published 2026-04-22 · Updated 2026-04-22

Tender flank steak roasted to perfection with a fragrant garlic butter sauce, served alongside crisp-tender green beans. This American-inspired beef recipe (low carb, keto), ready in about 35 minutes, pairs flank steak, olive oil, 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 low-carb week and pairs well with cauliflower rice or roasted green vegetables. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.

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

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Instructions

1. 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.
2. 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.
3. 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.