Preheat oven to 180 °C.
Grease muffin tins with coconut oil or prepare muffin silicone baking cups.
To prepare chia egg, simply mix 1 tablespoon of ground chia seeds (10 g) with 5 tablespoons of water. Stir and let it rest for 1 minute to thicken.
In a large bowl, mix together dry ingredients: chickpea flour, oat flour, coconut sugar, cacao powder, and baking powder.
Add rice milk, chia egg, and peanut butter and mix it with a hand mixer for a minute or two until it all comes together.
Spread the batter into prepared muffin tins and bake for approx. 25 minutes.
Let them cool down a bit before taking them out from the tins.
Note: Makes 10 muffins.