Rhubarb Dream Bars

These rhubarb dream bars follow the same format as lemon bars but swap in fresh rhubarb for a tart, fruity filling that screams spring. A crumbly shortbread crust bakes first, then a custard loaded with chopped rhubarb goes on top and bakes until set and slightly jiggly in the center.

The shortbread base is simple: flour, powdered sugar, and a full cup of butter pressed into the pan. Pre-baking it for 15 minutes gives it structure so it doesn’t turn soggy under the wet custard filling.

Four cups of rhubarb is a generous amount, and that’s the point. The tart rhubarb needs plenty of sugar to balance it, and the egg-flour custard holds everything together into sliceable squares instead of a loose, runny mess.

Pro Tips

• Cut the rhubarb into small, even pieces, about ½ inch. Large chunks don’t cook down fully and leave raw, fibrous pockets in the filling.
• Let the bars cool completely before cutting. The custard needs to set fully or it will ooze when sliced.
• Use fresh rhubarb, not frozen. Frozen rhubarb releases too much water and makes the filling runny.

Variations

• Add a handful of sliced strawberries to the rhubarb filling for a classic strawberry-rhubarb combination.
• Dust the cooled bars with powdered sugar for a clean, bakery-style finish.
• Stir a teaspoon of vanilla extract into the custard mixture for a warmer, rounder flavor.