Preheat oven to 400 F.
Heat olive oil in a large skillet over medium head. Add diced veggies and a sprinkle of salt to the pan and stir occasionally until they are browned, about 10 minutes. Remove veggies from heat and set aside.
Add cottage cheese to a mixing bowl and season generously with salt and pepper. Add the veggies into the cottage cheese and stir until combined.
Layer the bottom of a 13x9in baking dish with marinara sauce. Add one layer of uncooked noodles. You can break the noodles to fit the dish.
Spread 1/2 of the cottage cheese veggie mixture evenly over the noodles. Carefully spread a layer of marinara on top. Add a layer of noodles to cover.
Repeat above with the rest of the cottage cheese veggie mixture and more marinara. Add a final layer of noodles to cover.
Pour and spread the rest of the marinara over the dish. Sprinkle the mozzarella cheese evenly across the top.
Cover the dish with foil and bake for 30 minutes. Remove the foil and bake for an additional 5-10 minutes until the top is browned, and keep an eye on this last step.
Allow to cool slightly and add chopped fresh basil if using. Then slice, serve and enjoy!