Bakers, can you tell me if my idea will work?

I want to do something special for my boyfriend at college, so I’m sending him a care package with a hat and scarf I made him, a blanket I’m almost done working on, and I wanted to include a little treat in the package also. I saw this and I knew he would love them and they’d be easy to ship, but alas, no mini muffin pan. I went to AC Moore to get one and saw these and couldn’t resist getting them instead.

They’re normal sized cups though, not mini ones like the “recipe” above calls for. Plus, since they’re heart shaped and not round, I wasn’t sure how the cookie dough would fill out the shape. Should I cut the sliced dough into pieces and sort of spread them out in the cup so it’ll fill out the entire shape? Or if I put a wad of cookie dough in the cup, will it just do it on its own?

Probably a stupid question, but I don’t bake… this is relatively adventurous for me.