Oatmeal Chocolate Chip Cookie Bars

INGREDIENTS

1 cup

butter (, at room temperature)

1 cup

light brown sugar (, firmly packed )

1/2 cup

granulated sugar

eggs

2 tsp

vanilla extract

1/2 tsp

salt

1 tsp

baking soda

1 tsp

baking powder

1 1/2 cups

all-purpose flour

2 cups

rolled oats

2 cups

chocolate chips (semi-sweet, milk chocolate, or a little bit of both!)