Make pasta according to pkg. Last 5 mins of cooking add your shrimp to pasta water. Cook until no longer pink. Drain all but 1 C of water for the next step. Keep pasta and shrimp warm.
In a pan add oil & butter over Med heat. When the butter melts add, pasta to pan. Toss to coat. Season. Cook for 2 mins, stirring often.
Next, add spinach, and cook for 1 min until wilted (add ⅓ cup more water here if necessary to steam/cook spinach) Last add shrimp and cheese.
Stir gently until the cheese melts. Do not overcook. Add more seasonings to taste. Garnish with dried cilantro.