1. BLISTER TOMATOES In a large skillet, heat oil over medium-high heat. Add tomatoes (whole) and sear, stirring occasionally, until they burst and soften, about 7 minutes. Turn heat off. Chop if extra-large.
2. MAKE RISOTTO: At the same time, in a large heavy-bottomed pot or dutch oven, heat the olive oil over medium heat and add the onions. Saute until golden about 10-12 minutes. Add garlic and thyme, saute 2 more minutes until fragrant.
3. Add the rice, saute 1 minute, stirring.  Add 2 cups warm stock (enough to cover the rice), saffron and smoked paprika, stir and bring to a simmer. Simmer until most of the liquid is absorbed. Add 1 cup broth and the tomatoes and all their juices. Stir until all the liquid is absorbed. Continue adding broth 1 cup at a time, letting the rice absorb it slowly, stirring often over med-low heat, until the rice is plumped, slightly al dente, yet creamy, about 20-25 minutes. You may not need all 8 cups. ( I used 6 3/4).
4. Stir in the butter and parmesan. Season generously with salt, pepper, and optional chili flakes.  Taste, adjust salt. If bland, it probably needs more salt.
5. Serve as a flavorful side or vegetarian main, garnishing with fresh parsley and lemon zest.

Optional Seared Prawns:

1. If adding the prawns, mix spices and salt in a bowl. Coat shrimp with the spices. Heat 2-3 tablespoons oil in a skillet (you may need to do this in batches) over medium-high heat, sear each side 2-3 minutes or until cooked through.  Top the risotto with the seared prawns.