Preheat your oven to 350°F (175°C) to ensure even baking.
In a large mixing bowl, combine the almond flour, rolled oats, erythritol, cinnamon, baking powder, and salt. Stir until well blended.
In a separate bowl, whisk together the melted coconut oil, almond milk, eggs, and vanilla. Slowly combine this mixture with the dry ingredients, stirring until fully incorporated.
Using a cookie scoop, drop dollops of dough onto a parchment-lined baking sheet. Flatten the tops slightly for even baking. Repeat until the dough is gone, spacing the cookies about 2 inches apart.
Bake in the preheated oven for about 12-15 minutes or until the edges are golden and the cookies are set.
Allow the cookies to cool completely on the baking sheet before transferring them to a wire rack.
While cookies cool, mix together almond butter, erythritol, and a splash of almond milk in a bowl until creamy.
Spread the cream filling between two cookies, creating delightful sandwich pies.