In a large pot, add all ingredients for the casserole and bring to a boil. Reduce heat and simmer for about 20 minutes, until lentils and rice are done or slightly al dente.
Meanwhile, combine the topping ingredients, and mix well.
When the lentil and rice mixture is ready, transfer to a lightly oiled 8X13 casserole dish. Sprinkle the topping evenly over the mixture.
Bake for 20-30 minutes, until bubbly and topping is slightly browned.