Аппетитные роллы из фланк стейка с начинкой из сыра и шпината!

Here is what you will need! Makes 6 Ingredients 2 tablespoons canola oil, divided 3 tablespoons chopped garlic 2 sweet onions, such as Vidalia, chopped 2 cups mushrooms, thinly sliced ½ tablespoon kosher salt ½ tablespoon freshly ground black pepper 2 pounds flank steak Kosher salt Freshly ground black pepper 1 (4-ounce) package baby spinach 9 slices Provolone cheese Preparation Preheat oven to 350° Fahrenheit. Heat 1 tablespoon of the oil in a pan over medium-high heat. Combine the garlic, onions,