Preheat your oven to 350 F / 180 C. Lightly grease a muffin pan with oil or butter. In a large bowl, whisk the almond flour, granulated sweetener, cocoa powder, baking powder, xanthan gum, and salt.
Add the butter to a pan over low heat and let it melt. Take the pan off the heat and let the butter cool slightly. Add the melted butter to a bowl with the eggs and vanilla extract, and whisk.
Pour the wet ingredients over the dry ingredients and fold using a spatula until combined. Divide the batter into the greased cupcake tin using a cookie scoop. Transfer the pan to the oven.
Bake for 12-15 minutes or until the center doesn’t jiggle when you shake the pan. Grease the bottom of a glass slightly smaller than the holes in the muffin pan. Press the cup into the individual brownies until they are all pressed enough to look like brownie cups.
Remove them from the pan and transfer them to a plate. Add a scoop of vanilla ice cream to each brownie cup and top with 1 tbsp of chocolate sauce. Sprinkle with nuts and serve.