Host: "Bakers, welcome to your fifth week in the tent. Now, for this morning's signature challenge, we'd like you to make your favorite tray bake. Now, this can be brownies, blondies, rocky roads."
Host: "Paul and Mary have said the pieces should be identical in size, and everything you make as part of the tray bake should be from scratch, be it marshmallow, caramel, whatevs. We've got two hours, so on your mark, get set. Bake."
Mary Berry: "A classic British tray bake can be biscuit, cake, or pastry, but must be baked in a square or rectangular tin and cut into neat individual pieces.They've got to think of something original. Each layer complements the next. If it's got a pastry base, it's got to be crisp. If they're putting a jam layer in, it's got to the right thickness. We want some lovely surprises and wonderful finishes."
Paul Hollywood: "For me, a tray bake is all about the flavor and also the textures. The very fact that it's a simple, often just a one mix baked and cut makes it extremely difficult because when you're judging, you have to be even more critical."
