Ingredients

1 cup sliced onions

12 ounces coarsely chopped greens, like spinach or kale

6 large eggs

1/2 teaspoon kosher salt

1 cup freshly grated Parmesan cheese, divided

12 ounces low-fat ricotta cheese (about 1 3/4 cups)

1 tablespoon olive oil

Pie crust or puff pastry (optional)

Preparation

Partially pre-bake the pie crust according to direction, if using a crust.

Heat olive oil in large skillet or Dutch oven. Add onions and saute until golden, about 4 minutes Add greens; saute until wilted, tender & dry (~ 15 min.)

Allow onions/greens mixture to cool.

Beat eggs and salt to blend in large bowl. Whisk in 3/4 cup Parmesan, then greens. Stir in ricotta, leaving some clumps.

Pour in egg mixture into pie crust–or into a ceramic pie plate if not using a crust–spreading evenly. Sprinkle remaining 1/4 cup Parmesan over eggs.

Bake until pie is set, about 20-30 minutes, covering crusts if browning too quickly.

Let cool 10 minutes.

Slice into wedges and serve.