Spinach and ricotta patties with tomato sauce

Name: Spinach and ricotta patties with tomato sauce
Prep time: 15 min
Cook time: 30 min
Total time: 30 min
Yield: 2 portions
Ingredients: olive oil; 90 g Parmesan cheese; 1 - 2 pieces lemon zest; 200 g fresh baby spinach leaves; 250 g ricotta; 1 pinch sea salt; ¼ tsp ground nutmeg; ¼ tsp ground black pepper; 1 egg; 90 g plain flour; 1 brown onion; 1 garlic clove; 20 g olive oil; 400 g canned chopped tomatoes; 1 tsp dried oregano; 1 tsp Vegetable stock paste; 1 pinch sea salt; 1 pinch ground black pepper