I need to make a 16x16 square cake but my oven is too small is it ok to put four 8x8 together to make it 16x16 and if I do is bettercream neede to keep them together. Thanks in advance

Yes, you can "glue" cakes together with frosting. If your edges are a little crispy and/or rough, you may want to cut a very thin slice off of at least the sides that come together to make the seam easier to ice over.

I have a tiny oven, and I would do the 4 8x8 cakes

Thank you thats what I thought but was scared to do all the baking and have it not work you guys saved me lots of time!!