Preheat the oven to 325 degrees fahrenheit and prep a 10” cast iron skillet or an 8x8 baking dish.
In a large bowl, whisk together the egg, maple syrup, butter, almond butter, milk, and vanilla until smooth.
In a separate bowl, whisk together the almond flour, baking soda, and a pinch of salt.
Fold the dry ingredients into the wet ingredients until just combined. Fold in the chocolate chips. The batter will be thick.
Spread the batter into the skillet evenly.
Bake for 18-20 minutes until golden brown on top.
Remove from the oven and allow to cool for 5-10 minutes before serving. Top with paleo-approved ice cream if desired!