Fill muffins with a freezer
I find it just so brilliant, that's why I write the tip here. Actually, I like to make muffins, go easy, can vary a lot, always get along well, etc.
Some doughs, however, are quite fluid and I find the filling with spoons impractical, because with me gross motor skills, eternally slobbering and drooling.
Therefore, take Rovo or simply a freezer bag, fill it with the dough, cut off a little corner and off you go ... with a little practice, it will work out wonderfully soon. No, I'm NOT a throwaway fanatic, but THIS bag will be put into the bin immediately after use.