In large saucepan, heat olive oil. Add onions and bring to medium heat. Add salt and cook until translucent, about 5-7 minutes.
2
Add garlic and cook for another 2-3 minutes. Stir in the tomatoes with 3/4 can of water. Bring to a boil, reduce to a simmer and cook for 20-30 minutes.
3
Meanwhile, bring a pot of water to boil. Add cauliflower and cook for 5-7 minutes until soft and falling apart. Strain cauliflower and add it to the tomato mixture.
4
Simmer cauliflower in tomato mixture until cauliflower has completely broken up and is coated in sauce, 20-30 minutes. Mixture should be thickened. Taste to adjust seasonings and stir in lemon zest. Serve.
