Method:
Preheat oven to 350°F. Lightly oil a (9- x 13-inch) baking dish; set aside.
Wrap tofu in 3 or 4 layers of paper towels and gently press out as much water as possible, changing the paper towels once or twice as needed. Transfer tofu to a large bowl and add yeast, garlic, salt and pepper and mash with a fork. Set tofu mixture aside. Put marinara sauce into a medium pot and bring to a simmer. Add peppers and continue simmering until tender, about 10 minutes.
Spoon enough marinara sauce into prepared dish to cover the bottom and then arrange 4 noodles on top. Spread one-third of the tofu mixture over the noodles and then spoon more sauce over the tofu. Repeat the process 2 more times, ending with sauce. Cover with foil and bake until noodles are tender, 45 to 60 minutes. Set aside to let rest for 10 minutes and then serve.