A sweet, delicious, and easy hazelnut and marshmallow stuffed treat.
Preheat your oven to 350°F.
Mix butter and brown sugar in a large bowl.
Beat in egg and vanilla. Continue blending for 2 minutes.
Add dry ingredients and mix into a dough.
Divide dough in half.
Place half of dough in baking tray and cover entire bottom.
Spread hazelnut spread evenly. Then add dark chocolate on top.
Spread marshmallow fluff on top of chocolate.
Take remaining dough and make small shingles to cover top.
Bake for 35 minutes or until top is golden brown.