Step 1

Preheat the oven to 350 degrees F (175 degrees C). Spray a 9 x 13-inch baking dish with non-stick cooking spray.

Step 2

Remove the onion skins and slice the onions into thin slices, about 1/4-inch thick. Separate the sliced rounds into onion rings.

Step 3

Lay the onions into the prepared baking dish.

Step 4

Sprinkle the garlic powder, Italian seasonings, salt, and pepper over the onions.

Step 5

Spread the pats of butter over the onions.

Step 6

Spread the shredded cheddar cheese over the onions. Next spread the Italian blend cheese and then the parmesan cheese.

Step 7

Bake for 25-30 minutes or until cheese is melted and golden brown.

Step 8

Serve the dish warm.