Easy Oven Baked Italian Marinated Flank Steak Recipe
Juicy Italian Flank Steak with Peppers and Onions
Looking for an easy weeknight steak dinner that’s packed with flavor? This Oven-Baked Italian Marinated Flank Steak is a simple yet satisfying meal made with just four ingredients. Tender strips of flank steak are baked with colorful bell peppers and sweet onions in a zesty Italian dressing marinade, creating a juicy, savory dish that’s perfect for busy evenings.
Whether served over rice, pasta, or potatoes, this easy baked steak recipe delivers restaurant-quality flavor with minimal prep and cleanup.
Why You’ll Love This Recipe
- Quick and easy family dinner
- Only 4 simple ingredients
- High-protein meal that keeps you satisfied
- Packed with flavorful Italian herbs and spices
- Great for meal prep and leftovers
- Naturally low-carb and keto-friendly when served without starches
Ingredients
- 1½ pounds flank steak, sliced into ½-inch strips against the grain
- 1 cup zesty Italian dressing
- 1 medium yellow onion, thinly sliced
- 1 red bell pepper, thinly sliced
Instructions
Step 1: Prepare the Oven
Preheat your oven to 400°F (200°C).
Step 2: Layer the Vegetables
Spread the sliced onion and red bell pepper evenly across the bottom of a 9×13-inch baking dish.
Step 3: Add the Steak
Arrange the flank steak strips over the vegetables in an even layer.
Step 4: Add the Marinade
Pour the Italian dressing evenly over the steak and vegetables, ensuring everything is well coated.
Step 5: Toss and Arrange
Using tongs, gently toss the ingredients in the baking dish, then spread them back into an even layer.
Step 6: Bake Covered
Cover tightly with aluminum foil and bake for 20 minutes.
Step 7: Finish Baking
Remove the foil and continue baking for 10–15 minutes, or until the steak reaches your desired doneness and the vegetables are tender.
For extra caramelization, broil for 2–3 minutes at the end.
Step 8: Rest and Serve
Let the steak rest for 5 minutes before serving. Spoon the flavorful juices over each serving.
Serve with rice, egg noodles, mashed potatoes, or roasted vegetables.
Health Benefits
High-Quality Protein
Flank steak is rich in protein, helping support muscle growth, recovery, and long-lasting energy.
Nutrient-Rich Vegetables
Bell peppers provide vitamin C and antioxidants, while onions contribute fiber and beneficial plant compounds.
Easy Low-Carb Option
Enjoy this recipe with cauliflower rice or a side salad for a delicious low-carb meal.
Expert Tips
- Slice steak against the grain for maximum tenderness.
- Marinate the steak in the dressing for up to 8 hours for deeper flavor.
- Add mushrooms for extra texture and richness.
- Use a reduced-sodium Italian dressing for a lighter option.
- Store leftovers in an airtight container for up to 3 days.
