Step 1

PreparationAioli Whisk egg yolk, garlic, ¼ tsp. salt, and 2 tsp. water in a small bowl to combine. Place bowl on a kitchen towel so it won’t slide around as you whisk and gradually stream in oil, whisking constantly until thick and emulsified. Aioli should be thick but pourable; gradually whisk in more oil if needed. Taste and season with more salt if desired. Casserole Place rack in upper third of oven; preheat to 375°F. Pulse onion, garlic, and roasted red peppers in a food processor until finely chopped; set aside. Heat 3 Tbsp. olive oil in a 10” ovenproof skillet, preferably cast iron, over medium-low. Add pasta and cook, stirring often, until evenly coated in oil and lightly browned, about 5 minutes (depending on the size and shape of your pasta, you may need to work in batches). Using a slotted spoon, transfer to a large bowl. Reserve pan. Drain tuna, reserving 2 Tbsp. tuna oil. place oil in reserved pan and increase heat to medium. Add anchovy, ½ tsp. salt, and reserved chopped vegetable mixture and season with pepper. Cook, stirring occasionally, until vegetables soften, 5–7 minutes. Add tomato paste and cook, stirring, until slightly darkened in color, about 3 minutes. Mix in toasted pasta, tomatoes, turmeric, red pepper flakes, remaining ½ tsp. salt, and 2½ cups water and bring to a boil. Cook, stirring occasionally, until pasta is slightly softened, 8–10 minutes. Remove from heat and stir in drained tuna and ¼ cup water. Transfer skillet to oven and bake casserole until pasta is tender and juices at the edges are bubbling, about 15 minutes. Remove from oven. Heat broiler. Drizzle casserole with a little olive oil and broil until browned and crisped in spots, about 4 minutes. Spoon some aioli over casserole and top with parsley if desired. Serve remaining aioli alongside.

Step 2

PreparationAioli Whisk egg yolk, garlic, ¼ tsp. salt, and 2 tsp. water in a small bowl to combine. Place bowl on a kitchen towel so it won’t slide around as you whisk and gradually stream in oil, whisking constantly until thick and emulsified. Aioli should be thick but pourable; gradually whisk in more oil if needed. Taste and season with more salt if desired. Casserole Place rack in upper third of oven; preheat to 375°F. Pulse onion, garlic, and roasted red peppers in a food processor until finely chopped; set aside. Heat 3 Tbsp. olive oil in a 10” ovenproof skillet, preferably cast iron, over medium-low. Add pasta and cook, stirring often, until evenly coated in oil and lightly browned, about 5 minutes (depending on the size and shape of your pasta, you may need to work in batches). Using a slotted spoon, transfer to a large bowl. Reserve pan. Drain tuna, reserving 2 Tbsp. tuna oil. place oil in reserved pan and increase heat to medium. Add anchovy, ½ tsp. salt, and reserved chopped vegetable mixture and season with pepper. Cook, stirring occasionally, until vegetables soften, 5–7 minutes. Add tomato paste and cook, stirring, until slightly darkened in color, about 3 minutes. Mix in toasted pasta, tomatoes, turmeric, red pepper flakes, remaining ½ tsp. salt, and 2½ cups water and bring to a boil. Cook, stirring occasionally, until pasta is slightly softened, 8–10 minutes. Remove from heat and stir in drained tuna and ¼ cup water. Transfer skillet to oven and bake casserole until pasta is tender and juices at the edges are bubbling, about 15 minutes. Remove from oven. Heat broiler. Drizzle casserole with a little olive oil and broil until browned and crisped in spots, about 4 minutes. Spoon some aioli over casserole and top with parsley if desired. Serve remaining aioli alongside.