Butternut Squash and Tomato Gratin - With fruit

1 large butternut squash or 1 large pumpkin , halved and seeded 5 tablespoons garlic-flavored olive oil 2 onions , chopped 5 cups water 4 -8 tablespoons salsa[...]

1 -2 medium butternut squash 2 tablespoons olive oil 2 (14 ounce) cans diced canned tomatoes (plain or with basil, oregano) 2 cups cheddar cheese , shredded 1[...]