Coat the Beef:

In a large bowl, mix cornstarch, flour, salt, and pepper. Coat the beef slices in the mixture.
Fry the Beef:

Heat vegetable oil in a large skillet over medium-high heat. Fry the coated beef slices until crispy and golden brown. Remove and drain on paper towels.
Prepare the Sauce:

In a small bowl, whisk together soy sauce, hoisin sauce, sweet chili sauce, rice vinegar, and brown sugar. Set aside.
Sauté Aromatics:

In the same skillet, remove excess oil, leaving about 1 tablespoon. Add garlic and ginger, sauté until fragrant.
Cook the Vegetables:

Add bell peppers and stir-fry until tender.
Combine and Serve:

Return the crispy beef to the skillet, pour the sauce mixture over, and toss to coat evenly.
Cook for an additional 2-3 minutes until the beef is well coated and heated through.
Garnish with chopped green onions and sesame seeds before serving.
🕒 Prep Time: 15 minutes | Total Time: 30 minutes | Servings: