Meanwhile, cut squash in half lengthwise; remove and discard seeds. Cut squash into 1/2-inch cubes. In large bowl, mix squash and onion; drizzle with remaining 2 tablespoons oil. Sprinkle with garam masala, cumin and salt; stir to coat. Spread on ungreased 15x10x1-inch pan. Bake 15 minutes; stir. Bake 20 to 25 minutes longer or until vegetables are browned and tender.