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.