Step 2
Meanwhile, in a large skillet over medium heat, melt butter. Add garlic and stir until fragrant, then add asparagus and cook until just tender, 4 to 5 minutes. Add shrimp and cook until pink, 3 minutes more. Season with salt and pepper. Add lemon juice, lemon slices, Parmesan and heavy cream and let simmer, then add cooked spaghetti.