Chocolate Chip Peanut Butter Oatmeal Skillet Cookie

INGREDIENTS

1/2 cup

unsalted butter, melted

3/4 cup

light brown sugar, packed

large egg

2 tsp

vanilla extract

3/4 cup

all-purpose flour

1/2 tsp

baking soda

1/2 tsp

salt, optional and to taste

1 1/2 cups

old-fashioned whole rolled oats (not quick cook or instant)

1 14 ounce can

sweetened condensed milk

1/2 cup

creamy peanut butter

1 cup

semi-sweet chocolate chips

ice cream, optional