Place flour, baking powder, salt, and sugar into a bowl, add butter and mix until well blended, using your hands if necessary. Line three 8x8 pans with parchment paper, leaving an overhang on both ends to make removing the squares easier.

Divide dough between the three pans and use your hands to spread and compress. The dough needs to be firmly pressed so that you do not end up with a crumbly base. Place into preheated 350°F (180°C) oven and bake for 12-15 minutes or just until the edges are beginning to brown.

While the bases bake, begin assembling the toppings for the Pecan Pie Squares and Johanne’s Kryptonite! Squares.

 Johanne's Kryptonite! Squares 

 Caramel Cinni Squares 

 Pecan Pie Squares