preheat the oven to 350°
mix the butter and sugars together until light and fluffy
beat in the vanilla and the egg
mix the salt and the flour and mix into the butter mixture, don't over mix
lightly flour the counter and roll the dough out
use cookie cutters to cut out 18 hearts
leave 12 whole and cut a smaller heart out of the remaining 6 cookies
transfer to a baking sheet
bake for 10-12 minutes
cool on a baking sheet 10-15 minutes to allow the cookies to set up
tint the frosting if desired
fill a piping bag with some of the frosting
outline 6 of the hearts with frosting [mv_schema_meta name="outline 6 of the hearts with frosting"]
stack the six cutout hearts on top of them to form 6 boxes[mv_schema_meta name="stack the six cutout hearts on top"]
add frosting to the box [mv_schema_meta name="add frosting"]
fill with sprinkles or whatever you're using inside as filling, fill it as full as you can if you want it to spill out when they take a bite[mv_schema_meta name="fill with sprinkles"]
pipe around the top edge of the cut-out cookie and lay a whole heart cookie on top of each cookie box
decorate the top of the cookies however you like, more frosting or sprinkles is fun