1. Heat oil in a large frying pan over medium-high heat.
  2. Cook onion for 1 to 2 minutes, or until it begins to soften.
  3. Stir in garlic and cook until fragrant, about 30 seconds.
  4. Add tomatoes and peppers; season with salt and ground pepper, and continue to cook for 2 to 3 minutes, or until tomatoes begin to soften.
  5. Pour in the coconut milk and bring to a boil.
  6. Add shrimp and continue to cook until shrimp are pink, about 4 minutes.
  7. Remove from heat and stir in lime juice.
  8. Spoon shrimp mixture over pasta or rice and sprinkle with cilantro.
  9. Serve with lime wedges and a sprinkle of crushed red pepper OR grated parmesan cheese.