Strawberry Rhubarb Squares

Somewhere between a lemon square and a custard tart, these strawberry rhubarb bars are both custardy and buttery—the ideal bar for the spring, if you ask me. Rhubarb is actually the first sign of spring in “pastry land,” as we like to call it. We scour our farm lists to find rhubarb, knowing that once we find it, it’s only a matter of time before strawberries, apricots, and cherries follow. The classic combination of strawberries and rhubarb is one that we look forward to every year.