Pasta & Pizza with avocado

1 (9 ounce) package refrigerated 3-cheese tortellini 1 cup cherry tomatoes , cut in half 1 (6 ounce) can sliced black olives 1 large avocado , peeled, seeded[...]

1/3 cup plain yogurt or 1/3 cup low-fat sour cream 1/3 cup low fat cottage cheese or 1/3 cup soft tofu 2 garlic cloves , chopped coarsely 1/2 cup packed fresh[...]

6 -12 slices bread (will vary with size of slice and amount loaded on each) 1 (15 ounce) can chili beans , slightly drained 1 (15 ounce) can unsalted corn ,[...]

16 oz pasta (angel hair or thin spaghetti works best / can use penne or bow-tie if desired / smaller macaroni or elbow pasta does not work well for this dish)[...]