Substitute vegetable stock for the water if desired.
Substitute red lentils or split peas for the mung beans if desired. If using whole mung beans or brown lentils, adjust time to 45 minutes and use brown rice instead of white.
Substitute 1/2 to 1 teaspoon coriander seeds and 1/4 teaspoon cumin seeds for the ground coriander and cumin if preferred.
If you like, as rice and beans are cooking, chop and add veggies such as carrots, zucchini, and broccoli for the last 5 to 10 minutes of cooking. My favorite is to add a cup or so of frozen peas right after it's done cooking and let them heat through.