Preheat a large skillet on medium-high heat. Add the olive oil and the green beans to the skillet and saute for 3-4 minutes, stirring frequently, until the green beans start to turn a very bright green color.
Add the shallots, garlic, and shrimp, and give everything a stir. Then add the curry powder, turmeric, salt and pepper, stir again and let it cook for another 2-3 minutes.
Next, add the can of coconut milk, and stir everything together. Turn the heat down to medium-low, bring it to a simmer, and then let it simmer for about 10 minutes.
Once the shrimp is cooked through, take it off the heat and serve. You can serve it with rice if desired, and top it with chopped cashews and cilantro.