cold morning sausage cheese bake

Ingredients For cold morning sausage cheese bake

• 1 lb lb

  sausage
• 1/2 c

  chopped onion
• 1/4 c

  parmesan cheese
• 1/2 c

  grated swiss cheese
• 1

  egg, beaten
• 1/4 tsp

  tabasco
• 1 1/2 Tbsp

  fresh parsley
• 2 c

  biscuit mix
• 3/4 c

  milk
• 1/4 c

  mayonnaise
• 1

  egg yolk
• 1 Tbsp

  water