Corn Dog Casserole

Ingredients (10)

• 2 cups thinly sliced celery
• 2 tablespoons butter
• 1-1/2 cups sliced green onions
• 1-1/2 pounds hot dogs
• 2 large eggs
• 1-1/2 cups 2% milk
• 2 teaspoons rubbed sage
• 1/4 teaspoon pepper
• 2 packages (8-1/2 ounces each) cornbread/muffin mix
• 2 cups shredded sharp cheddar cheese, divided