Actually, one more thing. IDK what the worlds are like later in the game, but for now it seems pretty linear.
So if you can't progress to the next level without collecting enough honey buns... why not just require a certain number of honey buns before you can go through the exit?
I suppose because honey buns are fungible, which means you could get 100% of the buns on level 1 and then only a couple on level 2 to unlock level 3? But IDK, maybe take another look at your overall game design to see what you want the purpose of the collectables to actually be.