Crust
4 cups shredded peeled zucchini,
    drained and pressed dry
2 cups cooked rice
1 1/2 cups shredded mozzarella cheese
1 cup grated Parmesan cheese
2 eggs

Combine ingredients and press into a greased 15 x 11 x 1-inch jellyroll pan. Bake at 400 degrees F for 20 to 25 minutes until set and lightly browned. Meanwhile, prepare Filling.

Filling
1 pound ground beef
1 medium onion, chopped
1 1/2 cups spaghetti sauce
1 teaspoon oregano
1/2 teaspoon salt
2 cups shredded Cheddar cheese

Combine all ingredients except for Cheddar cheese. Pour over baked crust. Sprinkle with cheese. Bake at 400 degrees F for 15 minutes. Let stand 5 minutes before cutting and serving.