Saute onions and peppers in 3 T. butter. Combine with cooked sausage and green chilies.
Spoon 1/3 cup of meat mixture and 3 T. cheese onto each tortilla. Roll up.
Place tortillas seam side down in a greased 9x13 baking dish.
In a bowl, mix together eggs, cream, milk, flour, seasonings and hot pepper sauce. Pour egg mixture over tortillas. Cover and refrigerate overnight.
In the morning, preheat oven to 350 F. and bake, covered for 50 minutes.
Remove from oven, sprinkle with remaining 1 cup of cheese, and bake 10 minutes more, uncovered. Let stand 10 minutes before serving.