Stir together first 5 ingredients until blended. Stir in pepperoni and chopped cheese slices.
Divide each pizza crust into 2 portions. Roll each dough portion into a 7-inch circle.
Spoon 1/2 cup cottage cheese mixture in center of each circle. Fold dough over filling, pressing edges to seal; place on a lightly greased aluminum foil-lined baking sheet. Prick dough several times with a fork.
Bake at 375° for 20 to 25 minutes or until golden. Let stand 5 minutes. Serve calzones with warm Pasta Sauce.
* Chopped cooked ham may be substituted for pepperoni slices.
Sauté onion and garlic in hot oil in a Dutch oven over medium heat 10 minutes or until onion is tender. Stir in diced tomatoes and remaining ingredients. Bring to a boil; reduce heat, and simmer, stirring often, 2 hours. Divide into recipe portions; and freeze remaining portions.