Barefoot Contessa's Caramelized Onions

These are wonderful on top of a hamburger.

• Ready In: 40 mins
• Yields: 1 1/2 cups

Ingredients

• 2  large yellow onions
• 4  tablespoons unsalted butter
• 1⁄4 cup  vegetable oil
• 1⁄4 teaspoon ground cayenne pepper
• 1  teaspoon kosher salt
• 1⁄2 teaspoon fresh ground black pepper

Directions

1. Cut the onions in half and then slice them into 1/8-inch thick half-rounds. (You will have about 3 cups of onions.)
2. Heat the butter and oil in a large saute pan over medium heat.
3. Add the onions, cayenne, salt, and pepper and saute for 10 minutes.
4. Reduce the heat to medium-low and cook, stirring occasionally, for 20 more minutes until the onions are browned and caramelized.