Preheat oven to 275 F.
Melt butter and cocoa powder in a small saucepan on low heat.
Stir until smooth.
Add protein powder, stevia, salt, vanilla and egg and beat well.
Combine milled flaxseed gel, walnuts, baking soda, and baking powder.
Add to the chocolate mixture. Mix all ingredients well.
Pour mixture into a square baking dish or into 5 ramekins and bake for 10 minutes or into a baking dish and bake for approximately 20 minutes or until a knife or toothpick comes out clean.
When done, remove and cool brownies on a wire rack. Serve when cool.
