Easy Pizza Fondue

Heat olive oil in a skillet over medium-high heat. Saute onion in hot oil until soft and translucent 4 to 6 minutes.

Heat a large pot over medium-high heat. Cook and stir beef in the hot skillet until browned and crumbly 5 to 7 minutes; drain and discard grease.

Stir beef onion and pizza sauce together in the same pot over medium-high heat. Add mozzarella cheese and Cheddar cheese one handful at a time stirring until cheeses melt into the fondue before adding the next handfuls. Ladle fondue into bowls.