• Preheat the oven to 350°F. Line 2 baking sheets with parchment paper.
• Melt butter in a microwave. Add sugar and stir to combine. Add beaten egg and mix well.
• Stir in oats, flour, vanilla extract, salt and baking powder.
• Drop teaspoonfuls of dough 2 inches apart onto the prepared baking sheets. Bake in the preheated oven until edges are golden brown, about 8 minutes.
• Let cool completely before removing cookies from pan.

To Assemble

• Melt the chocolate in the microwave.
• Spread a thin layer on a cookie and gently place another cookie on top.
• Place on a parchment lined rack and allow chocolate to set. Recipe inspired by Allrecipes.