Phoebe Lawless of Scratch Bakery in Durham, North Carolina makes cream pies all summer long that incorporate different fruits as they become available. This recipe works just as well with strawberries, peaches, cherries, or whatever is in peak season. It's also a great way to use fruit that is just beyond its usability, whether bruised or overly ripe. Most crumb crusts use cookie or cake crumbs, and not everybody has those lying around. Ground oats provide an easy and delicious base that most people have in their pantry.