Grind the carrot, mushrooms, onions and pepper using your food processor.
Put the mixture in a large bowl and add breadcrumbs, thyme, sea salt and pepper.
Heat oil in a large pan. Add mixture and sauté for 5 minutes.
Preheat oven to 375° F (180c).
Put some parchment paper on the bottom of the tray to avoid sticking and using any extra oil.
Assemble the lasagna. Lay down one layer of noodles. Use a spatula to spread 1/2 of the mushroom mixture. Lay down a second layer of noodles. Spread rest of mixture. Lay down last layer of noodles. Pour the tomato sauce on top.
Cover casserole with some aluminum foil or wet parchment paper. It will cook faster.
Bake for about 40 minutes.
Remove from oven and let sit for about 10 minutes.
Add peeled tomatoes and basil in your food processor and blend. Pour sauce on top of lasagna.