Preheat oven to 350 degrees Fahrenheit.
In a bowl whisk together eggs, milk, salt and pepper.
Heat a large skillet coated with cooking spray over medium high heat and add diced onions and peppers. Cook for 5 minutes until softened and set aside.
In the same skillet with a little more cooking spray, add eggs and scramble until they are fully cooked but still slightly runny. Set eggs aside.
Wipe skillet clean and add the pork sausage, cooking over medium high heat until it is fully cooked. Drain grease and add the sausage back to the pan along with the cream cheese. Continue to cook over medium heat, stirring constantly, until the cream cheese is completely melted. Set aside.
In a greased 11x8 inch casserole dish, place two Mission® Super Soft Flour Tortillas in the bottom of the dish.
Spread half of the sausage mixture over the tortillas, followed by half of the eggs, half of the onions and peppers, and ⅓ of the shredded cheese.
Place two more tortillas in the dish and repeat the sausage, eggs, onions and peppers, and cheese.
Top with the remaining 2 flour tortillas and sprinkle with remaining cheese.
Bake for 30 minutes or until the cheese is melted and the casserole is warmed through.