Seasonality Matters: Use fresh, seasonal berries when possible, as these will provide the best flavor and texture. However, frozen berries are a great alternative when fresh ones are out of season.

Balance the Flavors: Combining different berries, like blueberries and raspberries, adds complexity to the flavor. Experiment with your favorites to achieve your desired taste balance.

Texture is Key: Ensuring your crumble mixture is well-textured will impact the final product. Mix the ingredients until they reach a crumbly consistency, but avoid over-mixing to retain that delightful, crumbly texture.

Even Distribution: Make sure to evenly distribute the crumble mixture over the berry layer to create an ideal ratio of fruit to crumble in every bite.

Mind the Oven: Berry crumble bars should be baked until the top is golden brown and the fruit is bubbly. This usually takes about 30-35 minutes at 350°F