INGREDIENTS
1/2 cup
salted butter, softened to room temperature1
3/4 cup
packed light brown sugar
1 tsp
vanilla extract
1
large egg, at room temperature
1 cup
all-purpose flour (measured correctly)
1 cup
graham cracker crumbs (9 graham crackers)
1/2 tsp
baking powder
1
and 1/4 cup (225g) semi-sweet chocolate chips
1
heaping cup marshmallow creme