Pizza topped giant meatballs

Name: Pizza topped giant meatballs
Prep time: 20 min
Cook time: 1 h
Total time: 1 h 20 min
Cuisine: European, American, Italian, Mediterranean
Ingredients: 100 g tomato puree; 1/2 tsp herbes de provence; 1 tbsp dried oregano; 1 tsp onion granules; 1 tsp garlic powder; 1/2 tsp salt; 1 chopped carrot; 4 tsp fresh (finely chopped rosemary); 2 tsp Dijon mustard; 50 g quinoa (cooked); salt and pepper; 1 egg; your favourite pizza toppings: mushrooms (peppers, olives…); low calorie cooking spray