Roasted Cauliflower Curry
1 medium cauliflower (cut in bite sized florets)2 tbsp olive oil1 lemon, juiced1 red onion (thinly sliced)1 cup tomato puree (or 1 cup purée = 3 ripe tomatoes, diced, or one can of diced tomatoes) (also known as passata)2 clove...