Mostly Plants

This is my own kitchen invention, inspired by something that an ex once dreamed up.
Time: one hour.  Servings: 4
Ingredients:
1 Winter Squash–butternut, acorn, or hubbard
1/2 cup brown rice
1/2 cup wild rice
16 oz corn kernels (canned, frozen, or fresh–your call)
16 oz roasted tomatoes
1 tbsp garam masala, or to taste
Garlic (in whatever form), to taste
OPTIONAL pinch cayenne pepper
Method:
Preheat [...]