Preheat oven to 400 degrees F.
Combine veggies, garlic, and olive oil and place on 1-2 baking pans lined with aluminum foil (or lightly greased). Season with salt and pepper.
Bake in preheated oven 30-40 minutes until veggies are soft and roasted.
While veggies are cooking, beat together ricotta cheese, egg, Italian seasoning and season with salt and pepper.
Set aside.
Once veggies are roasted, lower oven to 375 degrees.
Grease 9x13" pan with cooking spray.
Spread about ½ cup of marinara on bottom of pan.
Place 4 lasagna noodles on top of marinara.
Top lasagna noodles with about ½ of the veggies.
Top veggies with half of ricotta cheese mixture.
Top ricotta with 1 cup of marinara and ½ cup of mozzarella cheese.
Repeat process, with noodles, veggies, ricotta, sauce, and cheese.
End with layer of noodles on top, topped with remaining marinara sauce and cheese (remaining mozzarella and Parmesan cheese).
Bake in preheated oven for 45 minutes, covered with aluminum foil.
Uncover for last 10 minutes, and finish baking until cheese is melted and golden.
Let sit for 10 minutes, then slice and enjoy!