Whisk egg at room temperature and add peanut butter, coconut oil, vanilla and sugar.
Mix well, and then slowly add in wheat flour mixed with baking powder. Finally, add milk as needed to form dough. You may need a little more than a ½ cup for a smooth dough. Roll about 1 tablespoon of dough at a time into small rounds. Using the back of a ¼ teaspoon create small wells in each cookie, or just use your thumb!
Then fill each with chocolate chips or your favorite jam. Bake them in an oven preheated to 350 degrees Fahrenheit for 12-20 minutes. Store cookies in airtight container for up to 4 days.