Chili Cheese Dog Casserole

Ingredients

• 1 package (8-1/2 ounces) cornbread/muffin mix
• 1 tablespoon olive oil
• 1 cup chopped green pepper
• 1/2 cup chopped onion
• 1/2 cup chopped celery
• 1 package (1 pound) hot dogs, halved lengthwise and cut into bite-sized pieces
• 1 can (15 ounces) chili with beans
• 2 tablespoons brown sugar
• 1/2 teaspoon garlic powder
• 1/2 teaspoon chili powder
• 1 cup shredded cheddar cheese, divided