Preheat oven to 400 degrees. Using fork pierce squash; place whole squash on baking sheet and bake for 45 minutes. Remove from oven and let cool. Reduce to 350 degrees.
Cut squash in half lengthwise, remove and discard seeds. Scoop out pulp, reserve shells. Set both aside.
In skillet heat oil, add onion, red pepper and garlic. Saute until onion is translucent. Stir in ground meat, saute until meat is no longer pink, add tomatoes, seasonings and reserved squash pulp and cook, stir occasionally until liquid is absorbed. Spoon half of mixture into a shell.
Place shells in baking dish(s) and bake 20 minutes. Sprinkle cheese on each one and then broil until melted and browned. Serve with sprinkled parsley.
Makes 2 servings.