Mix the pitted cherries with the lemon juice, lemon zest, maple syrup, sugar, and gluten free vanilla extract until combined.
Let sit for 5 minutes.
Pour the remaining ingredients, except for the confectioner's sugar, into a large bowl.
Use a hand mixer set on low to combine all of the ingredients, about 30 seconds. (The batter will be thin).
Bake for 30 minutes.
Remove from the oven, and let sit for about 15 minutes before serving, if you want to enjoy it warm. The clafoutis will rise in the oven, then fall after setting out for a bit.
Dust confectioner's sugar over the skillet or individual slices right before serving.