In a small microwave-safe mug, melt the chocolate chips and coconut oil together. Stir until well combined and smooth.
To the melted chocolate mixture, add the almond flour, egg yolk, maple syrup, and dairy-free milk.
Stir until all ingredients are fully incorporated and the mixture is smooth.
Microwave the mug brownie on high for about 30-60 seconds. Start checking at 30 seconds to ensure it doesn’t overcook, as microwave strengths can vary.
Allow the brownie to cool for a couple of minutes. Top with more chocolate and ice cream. Optional: chill in fridge for a nice summer treat on a warm night