Recipes Ingredients Meat & Poultry Pork Recipes Sausage-and-Mushroom Burgers with Broccoli Rabe Be the first to rate & review! By Martha Stewart Test Kitchen Martha Stewart Test Kitchen The recipes developed by our test kitchen team have undergone a rigorous process of development and testing, ensuring that every element is optimal, from ingredient amounts to method and cooking time. This process includes triple-testing recipes to ensure they meet our high standards. The many stellar cooks and food editors who have been part of our team include Sarah Carey, Lucinda Scala Quinn, Jennifer Aaronson, Shira Bocar, Anna Kovel, Greg Lofts, Riley Wofford, Lauren Tyrell, and Lindsay Leopold. Editorial Guidelines Updated on January 14, 2019 Print Rate It Share Share Tweet Pin Email Photo: Bryan Gardner Prep Time: 35 mins Total Time: 35 mins Servings: 4 An Oktoberfest take on the burger: Sweet Italian sausage and mushrooms in a patty. Dress the ciabatta roll with mayo, add a patty, some Provolone, and that all important broccoli rabe. Ingredients 3 tablespoons extra-virgin olive oil 12 ounces cremini mushrooms, finely chopped (4 cups) Coarse salt and freshly ground pepper 12 ounces broccoli rabe (from 1 bunch), cut into 2-inch pieces 2 tablespoons fresh lemon juice ¼ teaspoon red-pepper flakes, plus more for sprinkling 1 pound sweet Italian sausage, removed from casing 4 slices provolone 4 Portuguese or ciabatta rolls, halved and lightly toasted Mayonnaise, for serving Directions Heat 1 tablespoon oil in a large nonstick skillet over medium-high. Add mushrooms; season with salt. Cook, stirring occasionally, until golden brown, about 5 minutes. Transfer to a bowl. Heat 1 more tablespoon oil in skillet over medium-high. Add broccoli rabe; season with salt. Cook until crisp-tender, about 4 minutes. Stir in lemon juice and red-pepper flakes. Transfer to another bowl. Wipe skillet clean. Stir together sausage and mushrooms; season with salt and pepper. Form into 4 patties. Heat remaining 1 tablespoon oil in skillet over medium-high. Cook patties, flipping once, until just cooked through, about 6 minutes. Top each with cheese, cover, and cook until melted, about 30 seconds. Serve on rolls with mayonnaise, broccoli rabe, and more red-pepper flakes. Rate it Print