Quick Beef Pepper Steak Meal Prep

Name: Quick Beef Pepper Steak Meal Prep
Cuisine: American, Asian
Ingredients: 3 large bell peppers, chopped (I used 3 different colors); 1 lb beef flank (OR skirt steak), chopped into 1-inch pieces; 1 tablespoon avocado oil; 1 tablespoon garlic, fresh; 1/2 cup onion, diced; Sauce; 1 1/2 tablespoons arrowroot; 3 tablespoons low sodium soy sauce; 4oz low sodium beef broth; 2 teaspoons coconut sugar; 2 teaspoons sesame oil; 2 tablespoon Sriracha (or more/less to taste); 1 tablespoon sesame seeds