Preheat oven to 375 degrees
heat olive oil in large skillet. Saute chopped yellow onion and zucchini in oil until the vegetables start to soften
Add chopped spinach and cook until the spinach is completely wilted
Add salt, garlic and cumin and stir for about 1 minute
Add rinsed and drained corn and white beans
Add about 1/4 cup of verde sauce to the vegetable mixture
Stir together until everything is heated through
Remove vegetable filling from heat
Toast tortillas until beginning to brown but not crispy
spread a small amount of salsa verde in the bottom of a 9x13 dish - just enough to cover the bottom
Grate cheeses and mix together
Put a line of grated cheese on the tortilla and top with the vegetable filling
Roll the tortilla and place seam side down in the baking dish
Repeat until dish is full or all filling is gone.
Sprinkle any leftover filling on and around the enchiladas in the pan
Pour the creamy salsa verde mixture on top of enchiladas
Sprinkle the remaining shredded cheese to top of enchiladas
Cook covered with foil for 25 minutes at 375. Remove foil and cook for 10 -15 minutes or until the top is browned.
Garnish and serve