Add cottage cheese to a food processor and blend until smooth.
Add cottage cheese, eggs, maple syrup and vanilla to a bowl and mix until smooth.
Add baking soda, cocoa and oat flour to the same bowl. If your cocoa powder is clumpy sift it in. Mix together until smooth.
Fold in chocolate chips. Add batter to a greased or butter 10 inch cast iron skillet. I think a regular 10 inch skillet would also work but cooking time will vary.
Optional: Add additional chocolate chips to the top of the brownie skillet.
Bake brownie skillet for 20-30 minutes, until a toothpick comes out clean. I baked mine for 20 minutes on the dot but all ovens vary.
Let skillet cool for 5 minutes, add flaky sea salt if using. Divide out and top with ice cream if using.