Simple Vegetarian Skillet Lasagna.

olive oil

zucchini (chopped)

button mushrooms (finely chopped)

red pepper (seeded + chopped)

garlic (minced or grated)

jar roasted garlic or tomato basil pasta sauce

milk

crushed red pepper flakes

oil packed sun-dried tomatoes (oil drained)

rinsed green lentils

no boil lasagna noodles

fresh spinach

fresh basil

mozzarella (sliced)

provolone (shredded)

grated parmesan (plus more for topping)

pesto, for serving (optional)