We bought a countertop convection toaster oven that preheats within ~5 minutes. As a family of 2, it has pretty much replaced our oven usage, but a larger family might not like it as much. It can fit up to a 9x13 pan so that's a small sheet pan or most casserole dishes.

It's really nice that it doesn't make the kitchen hot. It can also air fry decently, not as nice as a standalone air fryer, but it's way more versatile. Ours is a ~ $300 Calphalon, pricier than most, but we use it almost daily, and the cheap Oster one we had before only lasted about a year. I'm sorry this sounds like an ad.