A 9-inch square baking dish is perfect for this. You can also use a 9-inch round or similar baking dish. I like to line the pan with parchment paper. Use two pieces and cross them with the edges overhanging the sides. A few dots of butter will help hold the parchment in place. We also use small "loaf" pans about 1 1/2 by 2 1/2 inches to make gift-size loaves.