1 cup grated Parmigiano Reggiano cheese, or more if desired
Instructions
Heat oil in a skillet and saute onion until soft. In a large bowl, combine onion with all remaining ingredients except Parmigiano and toss until well mixed. Pour into a greased 9 x 13 glass baking dish and top with Parmigiano cheese. Bake at 350 degrees until eggs are set and top is golden brown, about 45 minutes to an hour.
Recipe by Cooking With MicheleĀ® at https://cookingwithmichele.com/2011/09/zucchini-casserole/