Pulse cauliflower in food processor until riced.Transfer pulsed cauliflower to a bowl and add salt.
Mix and set aside for 10 minutes.To bowl of cauliflower, add almond flour, cheddar, parmesan, and eggs.
Mix until well-combined.To a medium pan over medium low heat, add avocado oil.Using a ΒΌ cup measuring cup, scoop cauliflower mixture from bowl and form into a ball.
Place cauliflower ball onto spatula and gently press down to form a patty.
Carefully slide the cauliflower patty from the spatula to the hot pan.Cook for 3-4 minutes per side, being careful to not flip too early.Set cauliflower fritters on paper towel to remove excess moisture.Enjoy warm with a dollop of sour cream and chopped green onions.Store in refrigerator and to reheat, bake for 10 minutes at 350 degrees.