Heat a skillet over medium heat and add the butter or oil. Once melted, add the diced onions and bell peppers. Sauté until softened, about 3-4 minutes.

Add the cooked breakfast sausage or bacon to the skillet and stir to combine with the vegetables. Cook for another 1-2 minutes to heat through.

In a bowl, whisk the eggs with a pinch of salt and pepper. Pour the eggs into the skillet with the vegetables and meat. Stir occasionally until the eggs are fully cooked, about 3-4 minutes.

Warm the flour tortillas in a dry skillet or microwave for about 20 seconds to make them pliable.

Divide the egg mixture evenly between the two tortillas. Sprinkle shredded cheddar cheese on top of the eggs.

Fold the sides of the tortilla inward, then roll it up tightly to form a burrito. Serve immediately with salsa or hot sauce if desired.