Vegetable lasagna is always a good meal choice for a vegan. And if you've heard about the heart-healthy and cholesterol-lowering engine 2 diet and want to try an approved recipe, this vegan lasagna is a good place to start. From rip esselstyn's the engine 2 diet, "Raise the roof" Sweet potato vegan lasagna replaces the high fat and cholesterol of cheese and beef with whole-grain noodles, tofu, and antioxidant-rich vegetables including mushrooms, broccoli, bell peppers, and corn crowned with a crunchy good-fat cashew topping. It's so delicious, he says, he served it at his own wedding. As if that's enough to be happy about, the lasagna noodles cook in the oven so there is no need to boil them firstwhat a time saver.