Preheat the oven to 300 degrees F.
In a bowl, sift together the 1 cup almond flour and 2/3 cup powdered sugar.
1 cup almond flour, 2/3 cup powdered sugar
In the bowl of an electric mixer, beat the 2 egg whites and the 1/4 tsp cream of tartar until soft peaks form. Gradually add the 1/4 cup granulated sugar until fully incorporated. Add the 1 tsp vanilla extract extract and continue to beat until stiff peaks form.
2 egg whites, 1/4 cup granulated sugar, 1/4 tsp cream of tartar, 1 tsp vanilla extract
Add a third of the flour mixture at a time to the beaten egg whites and use a spatula to gently fold until combined. Fold in the 1/4 cup mini chocolate chips.
2 egg whites, 1/4 cup mini chocolate chips
Fill a piping bag fit with a 1 inch circle tip with the batter. On a parchment paper lined baking sheet, pipe equal sized circles that are 2 inches in diameter, 1 inch apart. Bang the sheet on the counter a couple of times to remove any air bubbles.
Let the piped macarons sit for 45 minutes at room temperature until you can lightly touch the top of them without any batter sticking to your finger.
Bake for 15 minutes. Remove from the oven and cool for 15 minutes before removing from the pan. Cool on a cooling rack for an additional 20 minutes.
In the bowl of an electric mixer, beat the 1/2 cup salted butter until creamy. Add the 1 cup all purpose flour, 1/2 cup brown sugar, and 1 tsp vanilla extract. Mix on medium-low speed until the ingredients are thoroughly combined and a dough forms.
1/2 cup salted butter, 1 cup all purpose flour, 1/2 cup brown sugar, 1 tsp vanilla extract, ¼ cup mini chocolate chips
Fill a piping bag fit with a 1 inch circle tip with the filling. Pipe about 1 tbsp of filling onto one macaron half and place another on top.
Place the ¼ cup mini chocolate chips in a bowl. Roll the rim of the sandwiched macarons in the mini chocolate chips.