Preheat oven to 350 degrees F. Grease 9” pie tin.

In large skillet over medium heat, cook bacon. Remove from pan. Roughly chop.

In same pan, cook onion and butternut squash 5 to 6 minutes, until squash becomes tender. Mix in garlic; continue cooking 1 minute.

In large bowl, whisk together eggs, flour, salt, milk, pepper, baking powder, spinach, chopped bacon, squash, onions and 3 ounces cheese.

In prepared pie pan, arrange crust. Pour in filling; top with remaining cheese. Bake 40 to 45 minutes, until toothpick comes out clean from center.