
This quick shrimp spaghetti combines juicy shrimp with tomatoes, sweet onion, red pepper, garlic, and a bright splash of lemon. It is a simple stovetop pasta dinner with bold flavor, light heat, and an easy sauce that comes together fast.
Prepare the shrimp by thawing if needed, then peel, devein, and remove the tails. Slice the onion and red pepper, mince the garlic, and have the tomatoes, seasonings, and lemon juice ready.



Heat a generous drizzle of olive oil in a large skillet or Dutch oven over medium heat. Add the sliced onion, red pepper, and garlic, and saute for 4 to 5 minutes until softened and fragrant.



Stir in the diced tomatoes with their juices. Simmer for about 15 minutes, stirring occasionally, until the sauce thickens slightly and the vegetables are tender.



Add the shrimp, black pepper, salt, and cayenne pepper. Cook for 3 to 5 minutes, stirring gently, until the shrimp turn pink and are just cooked through.



Remove the pan from the heat and stir in the lemon juice. Spoon the shrimp sauce over hot cooked spaghetti and serve immediately.



If using frozen shrimp, thaw completely and pat dry so the sauce does not become watery. Reserve a little pasta water to loosen the sauce if needed, and reduce the cayenne for a milder version. Leftovers can be refrigerated in an airtight container for up to 2 days.