In a pan over medium heat, warm the oil. Add the shrimp and cook, stirring, until just pink, about 4 minutes. Transfer to a plate.
Return the pan to medium heat. Add the garlic, cumin and pepper flakes and sauté until soft, about 30 seconds. Place the cilantro, scallions and cream in a blender and blend until well combined.
Add the sauce to the pan and cook for 1 minute. Return the shrimp to the pan and toss to coat with the sauce. Taste and adjust the seasoning with salt and pepper and serve immediately.