follow the recipe correctly, this recipe does use more baking powder and that helps puff these up in the oven. 2. Use cold butter. This will make the biscuits flakier, lighter, and airier. Because when baking the butter will create steam between those folds and lift the dough. 3. Use a very hot oven. A hot oven will ensure the butter steams rather than melts between those layers. Keep the biscuits flaky!