-(shredded) Preheat oven to 400 F (hot). Grease baking sheets. Pat each biscuit round into a 4-inch circle on baking sheets. Mix tomato paste and oregano. Brush on each biscuit round. Mix onion and mushrooms. Sprinkle over tomato paste mixture. Top with shredded cheese. Bake until crust is lightly browned (about 8 minutes). Calories per pizza: About 105 NOTE: Other ingredients such as cooked ground sausage or ground beef, thin strips of salami, chopped green pepper, or chopped anchovies may be used in place of onion and mushrooms. Calories for a pizza will vary according to ingredients used.