In a skillet heat oil to medium high and then turn it down to medium and saute the onion until it is translucent - about 10 minutes.
Heat 3 cups of vegetable broth to a boil.
Meanwhile, to an 8" x 10" casserole add rice, lentils, all the spices and sauted onion. It could be a 9" x 9" or close to its size also.
Be careful and pour the broth over everything in the casserole dish.
Stir until all is evenly dispersed. The rice and lentils will settle on the bottom.
Cover with a fitted lid or cover tightly with foil. Leaving enough foil to go over the edges, liberally.
Bake at 325 degrees for 60 minutes.
Check and see if the liquid has absorbed and the rice is tender. If not add another 10 minutes.
It will still be very moist.
Serve and sprinkle with fresh parsley - if you like.
IF FREEZING:Please follow any of the directions defined in my article How to Prepare Food for the Freezer.TO PREPARE AFTER FREEZING:If you have frozen leftover mujadara in smaller rigid containers then take out the containers and put in the fridge the day before serving. Heat in a microwave on high, stirring about every 2 minutes until heated through.