Easy Caramel Popcorn Balls

Ingredients (6)

• + 3 (2.9 ounce) bags microwave popcorn, popped add to pantry
• + 1 cup brown sugar add to pantry
• + ⅔ cup sweetened condensed milk add to pantry
• + ½ cup corn syrup add to pantry
• ✓ ¼ cup butter
• ✓ ½ teaspoon vanilla extract