Creating these Breakfast Enchiladas is easy! Just follow these steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Sauté Vegetables: In a skillet, heat olive oil over medium heat. Add diced onion and bell pepper, sautéing until softened, about 5 minutes.
3. Cook Sausage: If using, add the crumbled breakfast sausage to the skillet, cooking until browned. Season with salt and pepper.
4. Whisk Eggs: In a large bowl, whisk together the eggs. Pour the whisked eggs into the skillet, stirring gently until just cooked through. Remove from heat.
5. Prepare Tortillas: Warm the tortillas in a microwave or on a dry skillet to make them pliable.
6. Fill the Tortillas: Spread a spoonful of the egg mixture onto each tortilla. Top with a sprinkle of cheddar and Monterey Jack cheese.
7. Roll the Tortillas: Carefully roll up each tortilla and place it seam-side down in a greased 9×13-inch baking dish.
8. Add Sauce: Pour the enchilada sauce evenly over the rolled tortillas, ensuring each one is coated.
9. Top with Cheese: Sprinkle any remaining cheese on top of the enchiladas.
10. Bake: Bake in the preheated oven for 20-25 minutes, until the cheese is bubbly and golden.
11. Serve Hot: Remove from the oven and let cool for a few minutes before serving.

These steps will guide you to crafting the most delightful Breakfast Enchiladas, infused with flavor that will fill your kitchen with a wonderful aroma!