Meatloaf Sandwich recipe served on a plate, by Farley's Pub
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Meatloaf Sandwich Recipe

Meatloaf, horseradish cheddar cheese, sautéed onions, on grilled sourdough

Inspired by Farley's Pub
Time1h
Serves2
Jump to Recipe
Last updated Oct 23, 2026

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Ingredients

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Method

Meatloaf

  1. 1

    Make meatloaf mixture

    Preheat oven to 375°F (190°C). In a large bowl, combine ground beef and ground pork. Add the finely chopped 1/2 cup onion, parsley, egg, breadcrumbs, milk, Worcestershire sauce, minced garlic, 1 tsp kosher salt and 1/2 tsp black pepper. Mix gently with your hands or a spoon until just combined — avoid overworking to keep meatloaf tender.

  2. 2

    Shape and sear

    Form the mixture into a compact loaf about 8 inches long and 3 inches wide. Heat 1 tablespoon vegetable oil in an oven-safe skillet over medium-high heat. Sear the meatloaf 2–3 minutes per side until browned (this adds flavor and helps keep juices).

  3. 3

    Bake

    Transfer skillet to the preheated oven (or move meatloaf to a baking dish). Bake until internal temperature reaches 160°F (71°C), about 20–25 minutes depending on thickness. Remove and let rest 8–10 minutes before slicing into 4 evenly sized sandwich-thickness slices.

Onion & Topping

  1. 4

    Sauté onions

    While the meatloaf bakes, melt 1 tablespoon unsalted butter with 1 teaspoon olive oil in a medium skillet over medium heat. Add 1 cup thinly sliced onion and cook, stirring occasionally, 8–12 minutes until softened and beginning to brown. If you like sweeter onions, sprinkle 1/2 teaspoon brown sugar after 5 minutes and continue cooking. For extra depth, stir in 1 teaspoon balsamic vinegar in the last minute. Season with a pinch of salt and pepper.

Assembly

  1. 5

    Prepare bread

    Butter one side of each sourdough slice with the 2 tablespoons softened butter. Heat a clean skillet or griddle over medium heat. Place bread butter-side-down on the skillet and toast until golden, about 1–2 minutes. Flip briefly to warm the other side if desired. Remove and keep warm.

  2. 6

    Toast with cheese

    Place 1 slice of horseradish cheddar on two of the sourdough slices, then place the warm meatloaf slices on top of the cheese so residual heat softens it slightly. (Alternatively, assemble open-faced and place under a broiler for 30–60 seconds to melt cheese—watch closely.)

  3. 7

    Finish sandwich

    Spread 1/2 teaspoon Dijon mustard and 1/2 teaspoon mayonnaise on each of the two remaining sourdough slices (adjust to taste). Top the meatloaf + cheese slices with the sautéed onions, then cover with the mustard/mayo-spread slices, buttered side out if you plan to press/grill further. If you want a warm, pressed sandwich, return assembled sandwiches to the skillet over medium-low heat and press gently with a spatula for 1–2 minutes per side until cheese is melted and bread is crisp.

  4. 8

    Serve

    Slice sandwiches in half if desired and serve immediately. Taste and adjust with additional salt, pepper or a swipe of extra horseradish if you prefer more heat.

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