Saute onion and garlic for 10 minutes, until soft.
Place cauliflower in a food processor pulse until the texture of rice. Depending o the size of the processor, this may take several iterations. I collected the 'rice' in a colander until I had it all riced.
Add cauliflower to skillet, cover and cook 5-10 minutes, stirring and flipping often, until soft. Add salt,stir and finish.