Preheat the oven to 350 degrees Fahrenheit and line a cookie sheet with parchment paper.
In a large bowl, stir together the almond butter, erythritol, almond milk, vanilla extract, and almond extract.
In a small bowl, whisk together the oat flour, baking powder, and salt. Dump the dry ingredients into the wet ingredients and fold together. Form the dough into a ball. Break off chunks of the dough and roll into balls (I used a small cookie scoop to make sure all the cookies were evenly sized).
Press the balls into thick patties between your palms and place them on a baking sheet. Use a teaspoon measure to indent “thumbprints” into the cookies. Fix any large cracks that form on the edges of the cookie dough, then fill each “well” with fruit spread.
Bake for ~10 minutes. Do not underbake or overbake! Underbaking results in a delicate cookie that might fall apart. Overbaking results in a dry and crumbly cookie. Let cool compeltely on the cookie sheet.
In a small bowl, whisk together the erythritol, fruit spread, and a few drops of water. Form an icing that you can drizzle. Fill a pastry bag with the mixture and snip a tiny corner off. Drizzle the icing over the cookies. Serve immediately and enjoy!