1 lb. bulk sausage (hot)
1/2 c. chopped onion
1/4 c. Parmesan cheese
1 egg, beaten
1/4 tsp. Tabasco
1 1/2 tsp. salt
2 tbsp. chopped parsley
2 c. Bisquick
2/3 c. milk
1/4 c. mayonnaise
1 egg yolk

Cook sausage and onion over low heat until sausage is done. Drain off fat, add cheese, whole egg, Tabasco, salt and parsley. Mix Bisquick with milk and mayonnaise. Spread half of dough on bottom of well greased 8x8 inch pan (can use 9x13 inch pan). Cover with sausage mixture. Spread remaining dough over sausage and brush with beaten egg yolk. Bake 25 to 30 minutes at 400 degrees. Cut in squares, eat hot or cold.