Cook the meatballs according to the recipe directions. Meanwhile, cook the rice according to the package directions.
While the meatballs and rice are cooking, heat the oil in a large skillet over medium-high heat. Add the onion and zucchini and cook until tender, 6 to 8 minutes.
Add the curry paste, coconut milk, and meatballs to the skillet; season with ¾ teaspoon salt and ¼ teaspoon pepper. Simmer until thickened, 3 to 5 minutes. Stir in the lime juice. Serve over the rice and sprinkle with the basil.