2. Cover a baking sheet with foil and lightly spray with cooking spray.
3. Cut acorn squash in half, seed, brush lightly with olive oil and sprinkle with black pepper. Place cut side down on baking sheet and bake for 30 to 40 minutes.
4. Dice bell pepper, and onion. Saute in a pan over medium high heat until soft.
5. Combine black beans, corn, bell pepper, onion, cumin and 1/4 teaspoon pepper in bowl.
6. Spoon half of mixture into each squash half and sprinkle each with shredded cheese. Bake 10 to 15 more minutes or until cheese is melted.