Preheat oven to 350.
Mix eggs, yogurt, maple syrup, oil, and vanilla into a large mixing bowl and combine well. You can also use a stand mixer or food processor to mix. I switch between both. A hand mixer works well too!
In a separate bowl, combine cocoa powder, baking soda, flaxmeal, and oat flour. Mix well with and try to get any chunks out!
Add dry ingredients to the wet (in the large bowl or electronic mixer). Combine well until the thick batter is formed. Again, try to get out chunks.
Fold in chocolate chips and mix again.
Line a muffin tin with muffin liners or simply grease with non-stick spray. Using an ice cream scooper, evenly distribute batter into each vessel. Shake to even out the batter. Option to sprinkle more chocolate chips on top!
Bake for 25 minutes on the middle rack. Let cool for a few minutes and enjoy!