Beef Turnovers

Ingredients

• 2 pounds ground beef
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• 1 can (4 ounces) mushroom stems and pieces, drained
• 1/3 cup chopped green onions
• 1/4 cup minced fresh parsley
• 2 tablespoons butter or margarine
• 2 medium tomatoes, diced
• 1 can (2-1/4 ounces) sliced ripe olives, drained
• 1/4 cup grated Parmesan cheese
• 4 cups all-purpose flour
• 4 teaspoons baking powder
• 1 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup shortening
• 1-1/2 cups milk
• Spaghetti sauce, warmed
• Shredded mozzarella cheese and additional Parmesan cheese, optional