I don\'t have muffin cupsWhat can I use instead in the oven?When you say you don\'t have muffin cups, are you referring to a muffin tin or to the paper liners for cupcakes? If you don\'t have the paper liners.just spray the muffin tin with cooking spray or grease them with shortening and your muffins/cupcakes will come out perfectly If you are saying that you don\'t have a muffin tin.then you can try placing muffin paper liners close together in a square pan and filling them with your muffin/cupcake batter (about 1/2 full) They won\'t hold a perfectly round shape this way, but they will still be individual sizes and very edible!!! When you ask about aluminum.if you are talking about
aluminum foil or the disposable aluminum pans that you buy at the grocery store, then YES, these both can be placed in the ovenHope this helps!Other related question