The blueberry mixture can be prepared and refrigerated at least 40 minutes and up to 3 days in advance. Store lightly covered at room temperature for up to 3 days, or freeze for up to 2 months.

You just want it to cool a bit before layering it into the crumble bars. Add the oats ... As well as creating a more streamlined design for recipe content, we’ve added lots of new features ...

Full ingredient amounts and preparation instructions are in the printable recipe card at the bottom of this post. This blueberry crisp with oatmeal recipe is so easy to make, even beginners can do it!