Alfredo Sauce :
8 ounces butter 
1 1/2 cup whipping cream 
freshly ground white pepper 
1 1/2 cups fresh grated Parmesan cheese 
18 slices mozzarella cheese 
Ricotta Mixture: 
2 cups ricotta cheese 
1/3 cup grated Parmesan cheese 
3/4 cup shredded mozzarella 
2 tablespoons sliced green onions 
2 teaspoons minced fresh parsley 
1/2 teaspoon salt 
1/8 teaspoon black pepper 
1/4 each teaspoon dried leaf basil and oregano 
1 1/2 cups prepared Alfredo sauce 
Vegetables:
2 cups chopped carrots 
4 cups sliced mushrooms 
1 cup chopped onion 
1 tablespoon butter 
2 cups chopped or sliced red bell peppers 
1 cup chopped or sliced green bell pepper 
2 cups sliced zucchini 
4 cups broccoli florets 
lasagna strips
Lay out enough dry lasagna strips in a 9x13 pan to ensure you have enough to make 3 full layers, with very little overlap on each layer. Remove the dry strips and cook according to package instructions until just tender; drain. 
Alfredo Sauce
Heat water to a boil in the bottom of a double boiler. Add butter, cream and pepper to the top pan and heat until butter is completely melted; stir in Parmesan until melted and blended in. Turn off heat and remove top pan and set aside to cool. Measure 1 1/4 cups of the sauce; store remaining sauce in the refrigerator until nearly serving time. 
Combine ricotta cheese, the 1/3 cup Parmesan, 3/4 cup shredded Mozzarella, the 2 tablespoons green onions, 2 teaspoon minced parsley, 1/2 teaspoon salt, 1/8 teaspoon pepper, 1/4 teaspoon each basil and oregano, and the cooled prepared Alfredo sauce. Blend well. Set aside at room temp. 
In a heavy skillet, sauté mushrooms, carrots, and onions in 1 tablespoon butter until just tender, about 6 to 10 minutes. Combine all vegetables; mix well. 
Grease bottom and sides of a 9x13x2-inch baking dish. Lay out 4 cooked lasagna strips to cover entire bottom of baking pan. Spread 1 1/4 cups of the Ricotta mixture evenly over the strips. Top with half of vegetable mixture and spread out evenly. Cover the vegetable layer with 9 slices of Mozzarella cheese. Repeat this layering. Top the second layer of mozzarella slices with lasagna strips and spread them evenly with 1 1/4 cups ricotta cheese mixture to finish. 
Grease or spray a sheet of foil with vegetable spray and cover the baking dish tightly with the foil, sprayed side down. Bake in a preheated 375° oven for about an hour or, until the internal temp registers 165° on an instant read thermometer. Remove from the oven and let stand for 5 minutes, covered, before cutting and serving. Heat reserved Alfredo sauce and spoon a little over each serving.
Serves 8