Melt butter in a medium skillet over medium-high heat.

Dice the red and green bell peppers and onion.

Add diced peppers and onions to the melted butter and saute until lightly browned, then reduce heat to medium.

In a bowl, beat the eggs with casserole blend cheese, salt, and pepper until almost completely blended.

Pour the egg mixture into the skillet with the sauteed vegetables.

Cook egg mixture over medium heat, stirring frequently until eggs are set but not runny. Remove from heat.

Place a tortilla on a flat surface.

Add a small amount of thousand island dressing to the tortilla.

Spoon about 2 tablespoons of the egg mixture onto the tortilla.

Roll the tortilla tightly to form a burrito.

Repeat with remaining tortillas and egg mixture.

Serve immediately or freeze for up to 1 month.