His wife stepped in from the kitchen, greasing a muffin tin.

Line a 12-hole deep muffin tin with paper cases.

Put a scant 1/3 cup of the potato mixture in each muffin tin.

Place half of the rounds in a muffin tin (you may need two tins).

Line a 12-cup muffin tin with paper or foil baking cups.

Line each cup of a muffin tin with a paper baking cup.

Place the muffin tin on a sheet pan and put it in the oven to heat, about 5 minutes.

Place a tomato half, cut side up, into each muffin tin.

Put the muffin tin in a cold oven and set the heat to 450 degrees.

A muffin tin looks like a large, deep bun tray.