Rajma Masala, or Red Kidney Beans in an Onion-Tomato sauce, is a classic Northern Indian dish. It is the Punjabi version of an old staple ??? rice and beans ??? that is found in many different cuisines. Rajma Masala tastes even better when eaten a couple days after cooking, since the flavors have melded in well. It is a great option as a dish for a dinner party spread, since you can prepare it a couple days in advance and refrigerate.