In a measuring cup/bowl, soak dried shiitake mushrooms in 2 cups (warm) water. Let soak for about 10-20 minutes (the longer the better) to hydrate the shiitakes.
In a large mixing bowl, combine jasmine rice, lentils and quinoa. Add water and rinse and drain until the water runs relatively clear (I did two rinses).
To your pressurized rice cooker pot, add jasmine rice, lentils, quinoa, canned corn, dark soy sauce, mushroom stock powder, frozen peas, sesame oil, the shiitake mushrooms AND the soaking liquid.
Mix everything to combine and then set to cook. If your rice cooker just flips to Keep Warm, let it sit for another 20-30 minutes to steam through. I cooked mine on the Multigrain setting and it cooked for about 1 hour.
Once cooked through, open the rice cooker and stir in the frozen peas to heat through. Serve with extra protein of your choice (I like using vegan "tuna") and enjoy!