Biscuits rely on cold butter and baking powder (or baking soda) for that sky-high lift and tender crumb. When you make dough ahead, the butter stays solid in the fridge, which is exactly what you want. Cold butter creates steam pockets in the oven, giving you those beautiful, flaky layers.
But here’s the interesting twist: the leavening agents start reacting the moment they hit liquid. If you mix the dough and let it sit too long, the bubbles escape—and your biscuits end up sad and flat. So, timing is everything.
The Sweet Spot: 8 to 12 Hours
For overnight success, you want to form your dough, cut out the biscuits, and pop them in the fridge, uncovered, for about 15 minutes. Then wrap them tightly in plastic wrap. This prevents a dry, leathery crust from forming. The next morning, all you do is preheat the oven and bake them straight from the fridge.
This method works like a charm as long as you keep the batch under 12 hours. Beyond that, the baking powder fizzles out, and you get something that looks more like a hockey puck than a golden pillow. Nobody wants a hockey puck for breakfast, right?
