Oatmeal Cookie S'mores Bars

INGREDIENTS

1 cup

old-fashioned oats

1 cup

all-purpose flour

1/2 cup

light-brown sugar (packed)

1/2 tsp

baking soda

1/4 tsp

salt

1/2 cup

butter (softened)

1 tsp

vanilla extract

and 1/4 cups semi-sweet or milk chocolate chips

and 1/2 cups miniature marshmallows

6 tbsp

light brown sugar

6 tbsp

butter (softened)

3/4 cup

old-fashioned oats

3/4 cup

(3 full) graham crackers (crushed)

6 tbsp

all-purpose flour

Optional: handful of miniature chocolate chips