Happy Heart Garlic "Cheese" Pie (with Garlic-Tomato Sauce)

2 egg whites
1 teaspoon fresh lemon juice
1 (14 ounce) package firm tofu, mashed
1 cup chopped onion
1/2 cup chopped cooked mushrooms
1/3 cup minced fresh parsley
1/4 cup dry breadcrumbs
3 cloves minced fresh garlic
1/8 teaspoon dried oregano

Tomato Sauce
3 cloves minced fresh garlic
1/2 teaspoon dried oregano
1 (1 pound) can crushed tomatoes
1/2 teaspoon crushed dried basil
Salt and pepper to taste
Dash of cayenne pepper

Beat egg whites until foamy; add lemon juice and tofu. Stir well. Saut