Pasta & Pizza with cheddar

1 pound spaghetti 1 tablespoon salt 1 medium onion chopped 4 tablespoons vegetable oil 15 ounces tomato sauce 16 ounces tomatoes, canned chopped 1 x salt to[...]

2 tablespoons jarred pesto sauce 8 slices sourdough bread 4 slices fontina or 4 slices provolone cheese or 4 slices mozzarella cheese 1 (12 ounce) jar roasted[...]

5 T butter 2 1/2 c. lowfat milk 1 T prepared spicy mustard Pepper 1 1/2 c. extra sharp Cheddar cheese , shredded (6 ounce) 1/4 c. flour 1 pound macaroni 1 c.[...]