1 lb. bulk sausage
1/2 c. onion, chopped
1/4 c. Parmesan cheese, grated
1/2 c. Swiss cheese, grated
1 egg, beaten
1/4 tsp. Tabasco
1 1/2 tsp. salt
2 tbsp. parsley, chopped
2 c. biscuit
2/3 c. milk
1/4-1/2 c. mayonnaise
1 egg yolk, beaten

Cook sausage and onion over low heat until meat is brown. Pour off fat. Add both cheeses, beaten egg, Tabasco, salt and parsley. Make Bisquick dough by mixing with milk and mayonnaise. Spread half of dough over bottom of greased 8 x 8 inch pan. Cover with sausage mixture. Spread remaining dough over sausage mixture. Brush with beaten egg yolk. Bake 25-30 minutes at 400 degrees. Cut in squares. Serve hot. Makes 16 squares.