Stuffed Meatloaf with Mushroom & Onion Filling, Provolone, and Rich Gravy

Reimagine a classic comfort food with this incredibly delicious and impressive Stuffed Meatloaf with Mushroom & Onion Filling, Provolone, and Rich Gravy. This isn’t your ordinary meatloaf; it’s a culinary masterpiece that elevates a humble dish into a centerpiece meal. A tender, perfectly seasoned beef loaf is rolled around a savory sautéed mushroom and caramelized onion filling, then baked to perfection. As it emerges from the oven, it’s crowned with slices of melting provolone cheese and draped in a luscious, homemade gravy, promising a burst of flavor in every bite. This hearty, flavorful, and wonderfully comforting dish is ideal for family dinners, holiday gatherings, or any occasion that calls for a truly satisfying and memorable homemade meal.

Ingredients:

For the Meatloaf:

• 2 pounds ground beef (80/20 lean-to-fat ratio for best flavor and moisture)
• 1 large egg, lightly beaten
• ½ cup plain breadcrumbs (panko for lighter texture)
• ¼ cup milk (whole milk or buttermilk for moisture)
• ¼ cup finely chopped yellow onion (from about ½ small onion)
• 2 cloves garlic, minced
• 1 tablespoon Worcestershire sauce
• 1 teaspoon dried thyme
• 1 teaspoon dried oregano
• 1 teaspoon salt
• ½ teaspoon freshly ground black pepper

For the Mushroom & Onion Filling:

• 1 tablespoon olive oil
• 1 medium yellow onion, thinly sliced
• 8 ounces cremini (baby bella) mushrooms, thinly sliced
• 2 cloves garlic, minced
• ½ teaspoon salt
• ¼ teaspoon freshly ground black pepper
• 1 tablespoon fresh parsley, chopped

For the Topping:

• 4-6 slices provolone cheese (or mozzarella)

For the Rich Gravy (Homemade, if desired):

• 2 tablespoons unsalted butter
• 2 tablespoons all-purpose flour
• 2 cups beef broth (low sodium)
• 1 tablespoon Worcestershire sauce
• Salt and black pepper to taste

For Serving & Garnish:

• Creamy mashed potatoes (as pictured)
• Fresh rosemary sprigs (as pictured, optional)
• Fresh chopped parsley

Step-by-Step Instructions:

1. Prepare the Mushroom & Onion Filling:
   • Heat 1 tablespoon olive oil in a large skillet over medium heat.
   • Add the thinly sliced onion and cook, stirring occasionally, for 8-10 minutes until softened and beginning to caramelize.
   • Add the thinly sliced mushrooms and minced garlic. Continue to cook for another 5-7 minutes, until the mushrooms have released their liquid and are browned.
   • Season with ½ teaspoon salt and ¼ teaspoon black pepper. Stir in 1 tablespoon fresh chopped parsley.
   • Remove from heat and set aside to cool slightly.
2. Prepare the Meatloaf Mixture:
   • In a large bowl, combine the ground beef, beaten egg, breadcrumbs, milk, finely chopped onion, minced garlic, Worcestershire sauce, dried thyme, dried oregano, 1 teaspoon salt, and ½ teaspoon black pepper.
   • Using your hands, gently mix until just combined. Be careful not to overmix, as this can make the meatloaf tough.
3. Assemble and Stuff the Meatloaf:
   • Lay out a large piece of parchment paper or plastic wrap on a clean work surface.
   • Transfer the meatloaf mixture onto the paper and, using your hands, press it into an even rectangle, about 10×12 inches and ½-inch thick.
   • Evenly spread the cooled mushroom and onion filling over the meatloaf rectangle, leaving about a 1-inch border on all sides.
   • Starting from one of the long sides, carefully roll the meatloaf tightly into a log, using the parchment paper to help guide it. Pinch the ends and seams to seal.
4. Bake the Meatloaf:
   • Preheat oven to 375°F (190°C).
   • Carefully transfer the meatloaf log to a baking dish (a loaf pan or a larger oven-safe dish).
   • Bake for 45-55 minutes, or until the internal temperature reaches 155°F (68°C).
5. Add Cheese and Finish Baking:
   • Remove the meatloaf from the oven. Arrange the provolone cheese slices over the top of the meatloaf.
   • Return to the oven for another 5-10 minutes, or until the cheese is melted and bubbly, and the internal temperature of the meatloaf reaches 160°F (71°C).
6. Make the Rich Gravy (while meatloaf finishes):
   • In a medium saucepan, melt 2 tablespoons butter over medium heat.
   • Whisk in 2 tablespoons all-purpose flour and cook for 1-2 minutes, stirring constantly, to create a roux.
   • Gradually whisk in the 2 cups beef broth, ensuring no lumps. Bring to a simmer, whisking frequently, until the gravy thickens to your desired consistency.
   • Stir in 1 tablespoon Worcestershire sauce. Season with salt and black pepper to taste. Keep warm.
7. Rest, Slice, and Serve:
   • Remove the meatloaf from the oven and let it rest for 10-15 minutes before slicing. This allows the juices to redistribute and makes for cleaner slices.
   • Slice the meatloaf into thick portions.
   • Serve each slice with a generous dollop of creamy mashed potatoes (as pictured), spoon rich gravy over the meatloaf and cheese, and garnish with fresh parsley and a sprig of rosemary. Enjoy!

Tips, Variations, and Storage:

• Meat Mixture: For an even richer meatloaf, you can use a mix of ground beef, pork, and/or veal.
• Breadcrumbs: Panko breadcrumbs tend to make a lighter, more tender meatloaf. For gluten-free, use gluten-free breadcrumbs.
• Vegetable Additions (Meatloaf): Finely grated carrots or zucchini can be added to the meatloaf mixture for extra moisture and nutrients.
• Filling Variations: Experiment with different fillings: spinach and feta, sun-dried tomatoes and basil, or even a spicy jalapeño and cheddar mix.
• Glaze Option: If you prefer a traditional meatloaf glaze, mix ½ cup ketchup with 2 tablespoons brown sugar and 1 tablespoon apple cider vinegar, and spread it over the meatloaf during the last 20 minutes of baking instead of using cheese and gravy.
• Don’t Overmix: Overmixing the ground beef can result in a tough, dense meatloaf. Mix just until combined.
• Storage: Leftover meatloaf and gravy can be stored separately in airtight containers in the refrigerator for up to 3-4 days. It also freezes well for up to 3 months.
• Reheating: Reheat slices of meatloaf gently in the oven or microwave, adding a splash of broth or gravy to prevent drying out.

Pairings:

• Classic Sides: Creamy mashed potatoes (as pictured) are a must! Roasted root vegetables, green beans almondine, creamed spinach, or glazed carrots are also excellent choices.
• Wine: A medium-bodied red wine like a Merlot, Zinfandel, or a Cabernet Sauvignon would pair beautifully with the rich beef and savory gravy.
• Bread: Crusty sourdough or dinner rolls for soaking up extra gravy.
• Salad: A simple, fresh green salad with a bright vinaigrette provides a nice counterpoint to the richness.

Quick Info:

• Prep Time: 25 minutes
• Cook Time: 50-65 minutes
• Total Time: Approx. 1 hour 25 minutes (including rest time)
• Servings: 6-8
• Cuisine: American Comfort Food
• Effort Level: Medium