Balsamic Stuffed Mushrooms Our Balsamic Stuffed Mushrooms are made with salty pancetta and a slightly sweet balsamic vinegar with caramelized onions sauce. These stuffed white button mushrooms will make a visually impressive appetizer for your next dinner party, or just a delicious weeknight snack. 30 Servings 30 minutesPrep Time 30 minutesCook Time 0 peopleloved this print Ingredients Directions Ingredients 30 large white button mushrooms (about 1-1/4 pounds) 1/2 cup chopped pancetta 1 medium onion,, finely chopped 2 cloves garlic,, finely chopped 2 cups lightly packed baby spinach leaves,, finely chopped 1 jar (24 ounces) Bertolli® Traditional Marinara with Italian Herbs & Fresh Garlic Sauce 1/4 cup plus 2 tablespoons grated Parmesan cheese,, divided 1/2 cup plus 2 tablespoons seasoned panko bread crumbs,, divided Directions Step 1: Heat oven to 400°F. Remove mushroom stems and finely chop. Heat pancetta in large skillet on medium-high heat. Cook 2 min. or until crispy. Add mushroom stems, onions, garlic and spinach. Cook 5 min. or until tender, stirring occasionally. Stir in 1-1/4 cups sauce, ¼ cup cheese and ½ cup bread crumbs. Cook 4 min. or until mixture has thickened and looks dry, stirring occasionally. Step 2: Use a ½-teaspoon measuring spoon to create a well in each mushroom cap for stuffing. Arrange on foil-lined baking sheet. Spoon filling into mushrooms. Combine remaining cheese and bread crumbs; sprinkle on top of mushrooms. Step 3: Bake 30 min. Heat remaining sauce and serve with mushrooms. Share This Recipe Share How To Sending Thank you! Your email was sent.Send another! Send More Enter your name* Recipient Name* Recipient Email Address* Enter your message here Hey! Thought you might like to learn how to do this from Bertolli. * Required field Send How To Related How To's & Recipes 15-Minute Chicken Margherita Get Cooking Tuscan Table Fall Get Cooking Spicy Tuscan Rigatoni with Sausage & Mushrooms Get Cooking Antipasto Tray Get Cooking Alfredo Florentine Lasagna Get Cooking Marinade Ratio Get Cooking