For my son's sixth birthday, he had lots of requirements for a cake. I did a google search for "peach blueberry cake" (plus additional search terms "GAPS sugar-free grain-free easy"), adapted two recipes, and discovered clafouti: a delicious cross between a custard and a cake, sweetened with fruit, and best enjoyed cold. SO buttery and good! It's really a lot better served cold, preferably chilled overnight.
Makes one 9x13" pan
8 medium peaches, or 16 small ones, pits removed
1 cup blueberries (or blackberries)
1 cup butter, melted
1/2 cup coconut butter, melted