- Preheat oven to 400F. Heat a large skillet with olive oil over medium heat. Add in all of the chopped and prepared vegetables, season with salt and pepper and cook until veggies begin to slightly soften - 4-5 minutes. Remove from heat and set aside. 
- To assemble our lasagna, begin by ladeling 1/3 of the bechamel sauce into a baking dish - evenly disperse to cover the dish.  
- Next, lay four lasagna noodles side-by-side in the dish on the bechamel sauce. Spoon 1/3 of the cooked vegetables, followed by 1/3 of the baby spinach on top of the noodles. 
- Now for the cheese. Dollop/spread 1/3 of the mascarpone as best as you can on top of the vegetables. Then, 1/3 of the mozzarella chunks.  
- Parmesan is next and don't be shy with it, use 1/3 of the grated amount. 
- Repeat steps two more times for a total of three loaded layers.  
- Cover with foil and bake for 45 minutes. Remove foil and then bake for another 25. 
- Remove from oven, tent with foil and allow to cool for 20 minutes or so before eating. Serve with more parmesan, olive oil and fresh mint.