You'll need your card base (I'm using a 4 x 8 card base, to make a 4x4 card). You'll also need your 1 3/4 inch circle punch, dimensionals, a pencil and your 'door' (I'm using cardstock that's 2x3)
Start by punching your circle from your base and then line up your next layer and trace a circle, so you know where to punch. Punch that one too.
Do the same with the next layer, you'll need at least 3 layers for this card. Make sure they all line up, but don't glue anything yet.
Attach your sweet treats cup to the middle layer.
Then attach your top layer on that and embellish as desired.
Lay your 'door' piece on the back, make sure it covers the cup. Use dimesionals and place them around the cup. This is so that your door can only go in so far and it can't go up and down, making sure all your treats stay in the cup.