I dont have a recipe but you could do a usual meatball/meatloaf type mix, smash them into muffin tin and bake them.
Then for the icing do some mashed potato, you could put a bit of food colouring or beetroot juice, what ever takes your fancy to make it pink.

ETA - I always grate in some carrot and zucchini into my meat balls, you could do the same

I do (roughly as I don't use recipe)
mince 500g
an egg
dry breadcrumbs about half-1 cup
chopped parsley
garlic
a carrot and zucchini grated
salt/pepper

I think that's it.