Caramel Popcorn Balls

Ingredients

• ✓ 5 tablespoons vegetable oil
• ✓ 2 ½ cups unpopped popcorn
• ✓ ¼ cup butter
• ✓ 1 cup packed light brown sugar
• ✓ ½ cup light corn syrup
• ✓ ⅔ cup sweetened condensed milk
• ✓ ½ teaspoon vanilla extract