1. Heat a PADERNO Classic Non-Stick 9.5-inch Fry Pan over medium-high heat; add the oil. Sauté the pancetta 3 to 5 minutes.
2. Add the butter; when melted, add the rapini. Cook over medium-high heat, stirring often, for 5 minutes.
3. Add stock; cover and bring to a boil. Cook until rapini is bright green, softened on the outside and still slightly crunchy inside, about 5 minutes. Season to taste with salt and pepper.
Tip: Serve as a side dish with roasted chicken, steak or salmon.