Caramelized Onion Meatloaf Sandwich with Potato Wedges and Horseradish Dijonnaise

There’s nothing quite like a classic meatloaf sandwich, but this version takes it to a whole new level. Imagine tender, juicy meatloaf slices topped with a sweet and tangy ketchup glaze, piled high on toasted sourdough bread with rich caramelized onions and a creamy horseradish Dijonnaise. It’s a flavor explosion that will make you rethink everything you know about leftover meatloaf.

And we didn’t stop there. Alongside this incredible sandwich, we’re serving up crispy potato wedges that are perfect for dipping into extra horseradish sauce. Whether you’re looking for a hearty lunch, a satisfying dinner or a game-day treat, this recipe delivers comfort and sophistication in every bite. Get ready to fall in love with meatloaf all over again.

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Ingredients

1 teaspoon Wasabi PasteView ingredient guideLike ingredientDislike ingredient

12 ounce PotatoesView ingredient guideLike ingredientDislike ingredient

1 unit OnionView ingredient guideLike ingredientDislike ingredient

10 ounce Ground BeefView ingredient guideLike ingredientDislike ingredient

1 unit Chicken Stock ConcentrateView ingredient guideLike ingredientDislike ingredient

4 slice Sourdough BreadView ingredient guideLike ingredientDislike ingredient

1 unit KetchupView ingredient guideLike ingredientDislike ingredient

4 tablespoon MayonnaiseView ingredient guideLike ingredientDislike ingredient

0.25 cup Panko BreadcrumbsView ingredient guideLike ingredientDislike ingredient

1 teaspoon Dijon MustardView ingredient guideLike ingredientDislike ingredient

1 teaspoon Garlic PowderView ingredient guideLike ingredientDislike ingredient

1 tablespoon (tbsp) ButterView ingredient guideLike ingredientDislike ingredient

0.75 teaspoon (tsp) SugarView ingredient guideLike ingredientDislike ingredient

1 tablespoon (tbsp) Cooking OilView ingredient guideLike ingredientDislike ingredient

Instructions

1. Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
2. Cut the potatoes into 1/2-inch thick wedges. Toss with cooking oil, salt and pepper. Spread in a single layer on the prepared baking sheet. Bake for 20-25 minutes, flipping halfway, until golden and crispy.
3. Meanwhile, peel and thinly slice the onion. In a skillet over medium heat, melt the butter. Add the onion and sugar and cook, stirring occasionally, for 15-20 minutes until deeply caramelized. Season with salt and pepper, then transfer to a bowl.
4. In a large bowl, combine the ground beef, panko breadcrumbs, garlic powder, chicken stock concentrate and a pinch of salt and pepper. Mix gently until just combined. Shape into two oval patties about 1/2-inch thick.
5. In a small bowl, mix the ketchup with a splash of water to make a glaze. Set aside.
6. In another small bowl, whisk together the mayonnaise, Dijon mustard and wasabi paste to make the horseradish Dijonnaise. Set aside.
7. Heat a large skillet over medium-high heat. Add a drizzle of oil and cook the patties for 4-5 minutes per side, until browned and cooked through. In the last minute, brush the tops with the ketchup glaze.
8. Toast the sourdough slices in a toaster or under the broiler until golden.
9. Assemble the sandwiches: spread a generous amount of horseradish Dijonnaise on two slices of toast. Top with a meatloaf patty, then a pile of caramelized onions. Close with the remaining toast slices.
10. Serve the sandwiches with the potato wedges and any extra horseradish Dijonnaise on the side for dipping.

Recipe Tips

FAQ

Can I use a different type of bread?

Yes, you can substitute sourdough with any sturdy bread like ciabatta, brioche or whole wheat. Just make sure it’s thick enough to hold the fillings.

Can I make the meatloaf patties ahead of time?

Absolutely! You can prepare the patties up to a day in advance and refrigerate them. Cook them straight from the fridge, adding a minute or two to the cooking time.

What can I use instead of wasabi paste?

If you don’t have wasabi, you can use prepared horseradish or add extra Dijon mustard for a similar kick.