Heat 2tsp oil in a saute pan; add both the dals, seeds, curry leaves and dry red chilies. Once the seeds start to splutter, add the green beans, carrots and salt. Cover and cook on medium flame, stirring occasionally until the veggies are tender and cooked through, about 12- 15 minutes. (Alternately to expedite the cooking process, microwave/ steam the veggies until tender and then add to the tempering ingredients and cook for 4-5 minutes).