Preheat oven to 375°F.
In a baking dish, combine quinoa, bay leaf, 1 tsp each salt and pepper, 1.5 tbsp olive oil, 4 garlic cloves, and water. Bake for 20 minutes, or until quinoa absorbs water.
Prepare Parmesan. Whisk eggs in a bowl and place breadcrumbs in another dish; season both with salt and pepper.
Let quinoa cool, then mix in 3 beaten eggs, mozzarella, Parmesan, and mashed cooked garlic. If dry, add more egg.
Form into 1.5-inch balls; chill for 30 minutes.
Halve tomatoes and mince 2 garlic cloves. Sauté in 2 tbsp olive oil over medium heat.
Add tomatoes, season, and cook until thickened. Add water as needed, simmer for 10 minutes, then add basil. Season to taste.
Pan-fry arancini in olive oil until golden.
Serve with fresh Parmesan and tomato basil sauce.