Mince the garlic, thinly slice the shallot, halve the cherry tomatoes lengthwise, chop the sun-dried tomatoes into thin 1/4-inch strips, and roughly chop the parsley. Season the shrimp generously with salt and pepper on both sides, ensuring even coverage. I like to let the seasoned shrimp sit for a few minutes while I finish prepping—this helps the salt penetrate and season them more deeply.

Heat the vegetable oil in a large skillet over medium-high heat until it shimmers. Working in a single layer, sear the shrimp for 2-3 minutes per side until they turn pink and opaque—don't overcrowd the pan or they'll steam instead of sear. Transfer the cooked shrimp to a plate and set aside. The shrimp will finish cooking slightly when returned to the sauce, so aim for just-cooked at this stage to avoid rubbery texture.

In the same skillet, melt the butter over medium heat. Add the sliced shallots and sun-dried tomatoes, cooking for 2-4 minutes until the shallots soften and become translucent. Add the minced garlic and red pepper flakes, stirring constantly for about 1 minute until fragrant. Sprinkle the flour over the mixture and stir well to create a light paste that will thicken the cream—this flour mixture is crucial for achieving a silky, velvety sauce texture.

Slowly pour in the heavy cream while stirring constantly to avoid lumps. Add the freshly grated parmesan cheese and cherry tomatoes, continuing to stir until the cheese melts completely and the sauce is smooth and combined. Reduce heat to low and simmer gently for 3-4 minutes, stirring occasionally, until the sauce thickens slightly and coats the back of a spoon. I use freshly grated parmesan rather than pre-grated because it melts into the sauce more smoothly without any additives affecting texture.

Add the spinach to the sauce and cook for 2-3 minutes, stirring gently, until it wilts completely into the creamy sauce. Return the cooked shrimp from Step 2 to the skillet and stir gently to coat them evenly in the sauce. Heat through for about 1 minute just until everything is warmed together, being careful not to overcook the shrimp. Taste and adjust seasoning with a pinch of salt if needed.

Transfer the creamy Tuscan shrimp to serving plates or a family-style serving dish. Garnish generously with fresh chopped parsley and additional freshly grated parmesan cheese if desired. Serve immediately while the sauce is warm and creamy. This dish pairs beautifully with crusty bread, pasta, or rice to soak up the delicious sauce.