Lower the heat to medium, add the onions, chile peppers and their seeds, and cook until softened, about 10 minutes. Add the garlic and cook for an additional minute. Sprinkle the flour over the vegetables and stir until the flour's fully cooked, about 2 minutes.☞ TESTER TIP: If you're worried about the flour clumping, you can load the 2 tablespoons of flour into a mesh strainer and gently dust over the veggies instead of just dumping it in.