Sausage and Broccoli Rabe Frittata (easy one pan egg recipe) (VIDEO)

Ingredients
8 eggs
1/2 cup heavy cream
1 teaspoon salt
1 teaspoon pepper
1/2 cup Parmesan (grated)
1 pound sweet Italian sausage (out of casing)
1 bunch broccoli rabe (either blanched or defrosted from frozen section)
5 cloves garlic (sliced)
1/2 teaspoon red pepper flakes
2 tablespoons butter
2 tablespoons extra virgin olive oil