Bell Pepper Stir Fry with Basil and Tofu

Name: Bell Pepper Stir Fry with Basil and Tofu
Ingredients: 1 lb. firm tofu; ¼ cup soy sauce; 3 Tbsp. seasoned rice vinegar; 1 Tbsp. sesame oil; 2 tsp. cornstarch; 1 tsp. kosher salt; ¼ cup vegetable oil, divided; 2 medium bell peppers, cored, seeded, and cut into thick slices; 1 medium white or yellow onion, thinly sliced; 2 garlic cloves, thinly sliced; 1 Tbsp. finely grated ginger; 1 cup torn Thai basil leaves; 1 Tbsp. chili crisp (optional); 2 tsp. toasted white sesame seeds; Steamed jasmine rice (optional)