Boil salted water for pasta and set prawn heads aside
Simmer prawn heads, seafood stock, and a splash of white wine for 15 minutes
Cook pasta for 2 minutes less than package instructions
Blend the simmered stock with tomato paste and crushed tomatoes until smooth
Sauté garlic in olive oil until fragrant
Sear prawns in the pan for 60 seconds per side
Strain the blended sauce into the pan and reduce by half
Toss the pasta in the sauce until glossy and coated
Plate the pasta and top with the seared prawns