Are you grain free/paleo? I'd still be more apt to use whole wheat flour instead of something like coconut flour but again, it depends on if you are grain free or not.
This recipe looks good as a single serving recipe and has a grain free (almond flour) and gluten free (oat flour) option as well.
1 1/2 tsp coconut oil (or butter, or any neutral oil)
1 tbsp brown sugar, coconut sugar or cane sugar (make sure it's vegan if you need to)
1 tbsp maple syrup (the real, good stuff por favor)
1/4 tsp vanilla extract
1/8 tsp fleur de sel/kosher salt/ maldon (plus more for sprinkling) (you can use regular salt in the dough too, just don't sprinkle it on top and use a little less)
1/8 tsp baking powder
2 tbsp + 2 tsp white whole wheat, whole wheat or all purpose flour
1 to 2 tbsp chocolate chips or chopped chocolate (vegan if needed. I go for 70% upwards because I LOVE bittersweet chocolate!)
Put the first 4 ingredients into a ramekin/any small oven proof dish thing. Put onto a cookie sheet and then into an oven which is preheating to 350 degrees F, for 1 minute (just so the coconut oil melts).
Add the salt, baking powder, and flour - stir in (easier if your ramekin/dish has high edges. If it's too hard to mix, just pour the contents into a small bowl, mix and smooth into the ramekin/dish).
Smooth the dough in the dish and scatter over the chocolate chips, pressing them in slightly. Sprinkle on some fleur de sel and bake for 7-10 minutes, until golden brown but still squidgy in the centre. Eat while still warm.