Follow the package instructions to make 2 cups of jasmine rice. Set aside until ready to serve.
Heat a large oiled pan over medium high heat. Add the garlic, ginger, lemongrass, and onions. Saute for 1 minute. Add the sliced beef and saute until browned, about 2 minutes.
Add the curry paste to the pan. Using a spoon, mix the paste around and let it mingle with the rest of the ingredients. Saute for 1 minute. Carefully add the can of coconut milk, and stir to combine. Use your spoon to breakdown the curry paste so it fully combines with coconut milk. Reduce temperature and simmer.
Add cubed sweet potatoes to the pan. I usually pre-cook them in the microwave to reduce cooking time. Feel free to use whatever other veggies you have on hand.
Season dish with fish sauce, lime zest, lime juice, soy sauce, and brown sugar. Add the Thai basil leaves. Taste and adjust to your palette. Allow to simmer for about 5 minutes.
Serve with jasmine rice and top with crushed cashews, and fresh herbs.