Serves 4 Spaghetti Squash with Meat Sauce Recipe Type: Entree Ingredients 1 medium spaghetti squash 1 pound lean ground beef (or turkey) 1 medium onion, chopped 1 cup mushrooms, sliced 1 (16-ounce) can tomato puree 1 teaspoon ground fennel 2 garlic cloves, crushed Instructions Preheat the oven to 350°F. Cut the spaghetti squash in half,