In a pan, heat butter and garlic to it. Sautee for 2 minutes and add cleaned prawns to the same. Add salt and pepper and cook for 3-4 minutes. Turn off the heat and set aside.
Wash and soak the rice in water for 1-2 hours. This is optional but helps with the boiling of rice. Drain water and boil 1/2 cup of rice in 4 cups of water till done. This will take about 10-12 minutes. Once the rice is boiled, drain water and fluff up the rice using a fork.
Mix all the dressing ingredients in a jar/cup till well blended.
Mix together all the salad ingredients, add dressing and mix gently. Serve immediately.