Grease a 9 x 13-inch pan with butter.
In a food processor or using a pastry cutter, combine the flour, sugar, baking powder, and salt.
Add the cold butter and pulse until the mixture resembles coarse crumbs.
Add the beaten eggs and pulse until the dough starts to come together.
Take half of the dough and press it evenly into the bottom of the prepared pan to form the crust.
Chill the crust until ready to use.
Reserve the remaining dough for the topping.