Denise got this recipe from somewhere and I decided to give it a try. You should too, it's really good.
Preheat oven to 350° F. In a small saucepan, bring potato, carrot, onion, 1 cup water and salt to a boil over medium-high heat.
Lower heat to medium, cover and simmer until potato and carrot are tender, about 10 mins. Meanwhile, thaw frozen broccoli in a colander under hot running water, then set aside and drain well.
When potato mixture has finished simmering, pour in to a blender and add tofu, yeast, lemon juice and garlic. Blend until very smooth and creamy. Pout into a shallow, greased, 1½ to 2 quart casserole. Add broccoli, rice, mushrooms and 3/4 cup water. Stir well and smooth top of casserole.
Bake for 40 mins, until golden and bubbling.
Serves 4.
Substitution: Instead of frozen broccoli, you can use 1 lb fresh broccoli (tops only), chopped and steamed briefly until crisp-tender, then cooled under cold running water and drainged thoroughly.