These berry crumb bars are a perfect bake for spring and summer, an easy and delicious way to use fresh berries. Raspberries, blueberries, and blackberries are nestled between layers of a buttery, crisp crumb crust for a treat that’s bright, fruity, and satisfying.

When berries are at their peak, these mixed berry crumb bars are one of the best ways to enjoy them. They deliver a balanced sweet-tart filling with a crunchy, buttery crumble on top and bottom — like an easier, handheld summer pie. Serve them at picnics, potlucks, or warm with a scoop of vanilla ice cream.