Hot Italian Sausage and Broccoli Rabe Frittata

Preparation

1. Step 1

   Heat oven to 350 degrees. Bring a large pot of salted water to boil. Add broccoli rabe and cook for 1 minute, just to wilt, then remove, rinse with cold water and drain. Roughly chop greens, then squeeze to remove excess water and set aside.

2. Step 2

   Heat a 10-inch cast-iron skillet over medium-high heat. Add sausage (remove casings from links first) and cook, stirring and mashing, until sausage is in large, well-browned crumbled pieces, 6 to 8 minutes. Remove cooked sausage, blot on paper towels, and set aside.

3. Step 3

   Add olive oil to skillet. When oil is hot, add onion and cook, stirring, until softened and lightly browned, about 5 minutes. Season well with salt and pepper, then add garlic and rosemary and cook for 1 minute more. Turn off heat and stir in chopped greens and reserved sausage. Let mixture cool in pan.

4. Step 4

   Spoon dabs of ricotta over greens mixture, then sprinkle evenly with provolone, Parmesan and mozzarella. Pour seasoned eggs over, tilting pan to distribute.

5. Step 5

   Bake for 30 to 35 minutes, until top is golden and eggs are no longer runny at the center. (Use a skewer or paring knife to check; residual heat will continue to cook frittata as it cools.) Let cool at least 15 minutes, then cut into wedges.