In a microwave-safe mug or ramekin, stir together almond flour, protein powder, maple syrup, egg yolk, milk, baking powder, vanilla extract, salt, and chocolate chips until smooth.
Press the cookie dough or chocolate chips into the center of the batter.
Microwave for 50–60 seconds until the top is just set and the center is still soft.
Let cool for 1 minute, then dig in warm with a spoon.
Oven Instructions:
Preheat oven to 350°F (175°C).
In an oven-safe ramekin, mix together all ingredients except the molten center until smooth.
Press cookie dough or extra chocolate chips into the middle of the batter.
Bake for 10–12 minutes until the edges are puffed and the center is just barely set—it should still look slightly soft in the middle.
Let cool for a couple minutes before serving warm.