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  • Jun 26, 2026
    Pepper Steak Stir Fry

    Tender, Juicy Steak with Colorful Peppers in a Rich Savory Sauce!

    Whether you're making a comforting family dinner or meal prepping for the week, this Oven-Baked Pepper Steak is packed with bold flavors and incredibly tender beef. Thinly sliced flank steak is layered with fresh peppers, onions, garlic, and ginger, then slowly baked in a rich Asian-inspired sauce until perfectly tender. Serve it over rice or noodles for a restaurant-quality meal right at home.

    Recipe Overview

    Prep Time: 20 minutes
    Cook Time: 1 hour 30 minutes
    Total Time: 1 hour 50 minutes
    Servings: 6

    Ingredients

    Pepper Steak

    • 2 lbs flank steak, thinly sliced against the grain

    • 3 cloves garlic, chopped

    • 1 tbsp fresh ginger, minced

    • 3 bell peppers (red, yellow, and green), chopped

    • 2 celery stalks, roughly chopped

    • 2–3 jalapeño peppers, roughly chopped

    • 2 fresh chili peppers, chopped

    • 1 medium onion, chopped

    • 3 green onions, chopped

    Sauce

    • 2 tbsp light soy sauce

    • 2 tbsp dark soy sauce

    • 2 tbsp oyster sauce

    • 1 tbsp Worcestershire sauce

    • 1 tbsp sesame oil

    • 1 cup beef broth

    • 2 tbsp cornstarch

    Seasonings

    • 2 tbsp all-purpose seasoning

    • 1 tbsp garlic powder

    • 1 tbsp onion powder

    • 1 tsp white pepper

    • 1 tsp sea salt

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    Instructions

    Step 1: Prepare the Steak

    Preheat your oven to 375°F (190°C).

    Slice the flank steak thinly against the grain on a slight diagonal (bias). Place the sliced steak into a large bowl.

    Step 2: Season the Steak

    Add:

    • All-purpose seasoning

    • Garlic powder

    • Onion powder

    • White pepper

    • Sea salt

    Toss well until every slice is evenly coated with the seasonings.

    Step 3: Prepare the Sauce

    In a medium bowl combine:

    • Light soy sauce

    • Dark soy sauce

    • Oyster sauce

    • Worcestershire sauce

    • Sesame oil

    In a separate bowl whisk the cornstarch into the beef broth until completely smooth. Pour the slurry into the sauce mixture and whisk until fully combined.

    Step 4: Assemble

    Lightly grease a 9×13-inch baking dish.

    Spread the seasoned steak evenly across the bottom of the pan.

    Top with:

    • Bell peppers

    • Celery

    • Onion

    • Garlic

    • Ginger

    • Jalapeños

    • Fresh chili peppers

    • Green onions

    Pour the prepared sauce evenly over the entire dish.

    Cover tightly with aluminum foil.

    Step 5: Bake

    Bake for 90 minutes, or until the steak is fork tender.

    Carefully remove the foil and gently stir everything together.

    For a thicker, richer sauce, return the dish to the oven uncovered for an additional 10–15 minutes.

    Step 6: Serve

    Serve hot over:

    • Steamed jasmine rice

    • Lo mein noodles

    • Egg noodles

    • Fried rice

    • Garlic butter noodles

    Garnish with chopped green onions and sesame seeds, if desired.

    Chef's Tips

    ✔ Slice the steak while slightly frozen for thinner, cleaner slices.
    ✔ Always cut against the grain for the most tender beef.
    ✔ Marinate the seasoned steak for 30 minutes to 2 hours before baking for even deeper flavor.
    ✔ Add broccoli, mushrooms, or snap peas for extra vegetables.
    ✔ Finish with a drizzle of sesame oil just before serving for a restaurant-quality aroma.
    ✔ If serving with noodles, toss the cooked noodles with a little of the pan sauce before plating for maximum flavor.

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