I’ve got a thing for blueberries and lemons, and they definitely belong together in the form of a lemon blueberry loaf, using coconut flour.
After playing around with lemon muffins and blueberries I decided to turn the recipe into a cake. This tastes very much like a lemon pound cake so if you prefer you can omit the blueberries and have just that. I do recommend adding about 1/2 tablespoon more lemon juice to the mix for tenderness that the blueberries provide.
I added a lot of blueberries here but you can easily dial it down to about 3/4 cup of blueberries and have quite enough in each slice. I used fresh blueberries but frozen will work as well.