Combine onions and 1/2 cup broth in a large skillet. Cook over medium-high heat, stirring occasionally, until all broth has evaporated and onions begin to brown.

Reduce heat to medium-low and continue cooking, stirring occasionally, adding broth in 1/2 cup increments when broth has evaporated, until onions are tender and become dark golden brown, about 45 minutes.

Serve caramelized onions with a variety of your favorite foods such as: 

• Top burgers, pizza, grilled steak, crostini with blue cheese and walnuts, casseroles and sautéed vegetables 
• Stir into mashed potatoes, soups, pasta dishes, guacamole, mac and cheese and scrambled eggs 
• Add inside quesadillas, Panini, wraps and more