Chop 16 ounces fresh mushrooms into quarters.
Chop 1/2 cup black olives.
Chop 2 to 3 cups of cooked turkey into cubes.
Melt 1/4 cup butter in large pot.
Add 2 teaspoons minced garlic.
Add 1 teaspoon salt and 1/8 teaspoon cayenne pepper.
Add the quartered mushrooms. Cook and stir for 2 minutes.
Add 1 cup white grape juice. Cook for 5 minutes.
Add 1/3 cup flour.Stir in and cook 1 minute.
Add 5 cups chicken broth.
Add 16 ounce package uncooked spaghetti noodles. Break in half if desired. Bring to boil, then reduce heat and let simmer for 8 minutes.
Add 8 ounce package of cubed cream cheese. Stir until melted.
Add 2 to 3 cups of cubed turkey.
Add 1 1/2 cup frozen green peas.
Add 8 ounce jar drained roasted red peppers.
Add 1/2 cup black olives.
Add 1 cup Romano and 1 cup Swiss cheese. Stir until melted. Add 1/4 cup bacon bits.
The tetrazzini is ready to serve. Sprinkle individual plates with Romano cheese and parsley.