Doughnuts and Cheeseburgers ...what could be better? Bring your burger from 'yum!' to 'yummmmm!' with this tasty twist on a classic.
(yield 4 servings)
4 Krispy Kreme Original Glazed® Doughnuts (sliced in half lengthwise)
2 tablespoons olive oil
2 tablespoons butter
3 cups sweet onions (thinly sliced)
Salt and pepper to taste
1 tablespoon balsamic vinegar
8 (3 ounce) burger patties
8 slices American cheese