Heat the olive oil in a stockpot over medium heat. Add the onions and sauté for 4-5 minutes until soft and translucent. Add the garlic and sauté one minute more.
Add the pepper and mushrooms and saute for 7-8 minutes.
Add the broth and marinara and bring to a boil.
Add the pasta and reduce to a simmer. Gently boil the lasagna noodles in the soup according to package directions.
Once the pasta is cooked, add the greens stirring until just wilted.
Season to taste with salt and pepper.
Garnish with fresh basil, cheese and/or seasoned breadcrumbs.