Caramelized Onion Meatloaf Sandwiches
with Potato Wedges & Horseradish Dijonnaise
- Soy
- Wheat
- Eggs
- Milk
When it comes to comfort food, meatloaf used to sit squarely in the number one spot, followed closely by the next-day meatloaf sandwich. But this sandwich changes everything. Topped with a classic ketchup glaze, sliced meatloaf is stuffed between toasted sourdough along with caramelized onion and a horseradish Dijonnaise. With potato wedges on the side and more sauce for dipping, prepare to rave about the triumph of this long-time fave!
Ingredients
1 teaspoon
Wasabi Paste
12 ounce
Potatoes
1 unit
Onion
10 ounce
Ground Beef
1 unit
Chicken Stock Concentrate
4 slice
Sourdough Bread
(Contains: Soy, Wheat)
1 unit
Ketchup
4 tablespoon
Mayonnaise
(Contains: Eggs)
¼ cup
Panko Breadcrumbs
(Contains: Wheat)
1 teaspoon
Dijon Mustard
1 teaspoon
Garlic Powder
Not included in your delivery
1 tablespoon (tbsp)
Butter
(Contains: Milk)
¾ teaspoon (tsp)
Sugar
1 tablespoon (tbsp)
Cooking Oil
Nutrition Values
Utensils
Cooking Steps
• Adjust racks to top and middle positions and preheat oven to 425 degrees. Wash and dry produce. • Cut potatoes into 1⁄2-inch-thick wedges. Halve, peel, and thinly slice onion. Mince a few slices until you have 2 TBSP (4 TBSP for 4 servings).
• Toss potatoes on a baking sheet with a drizzle of oil, salt, and pepper. • Roast on top rack until browned and tender, 20-25 minutes.
• Meanwhile, in a large bowl, gently combine beef*, panko, garlic powder, stock concentrate, minced onion, half the ketchup, salt (we used 1⁄2 tsp; 1 tsp for 4 servings), and pepper. • Form beef mixture into two 1-inch-tall loaves (four loaves for 4); place on a second baking sheet. Brush tops of meatloaves with remaining ketchup. • Roast on middle rack until cooked through, 15-20 minutes.
• While potatoes and meatloaves cook, heat a large drizzle of oil in a large, preferably nonstick, pan over medium-high heat. Add sliced onion and cook, stirring occasionally, until browned and softened, 8-10 minutes. • Add 1 tsp sugar (2 tsp for 4 servings) and a splash of water. Cook, adding more splashes of water as necessary, until onion is caramelized and jammy, 2-3 minutes more. Season with salt and pepper. • Turn off heat; transfer onion to a small bowl. Wipe out pan.
• Heat 1 TBSP butter in same pan over medium heat. Add bread and toast until golden brown, 2-3 minutes per side (add more butter and work in batches as needed). • While bread toasts, in a second small bowl, combine mayonnaise, half the wasabi (use less if you’re heat-sensitive), half the mustard, and ¼ tsp sugar (all the wasabi, all the mustard, and ½ tsp sugar for 4 servings). Season with salt and pepper if needed.
• Lay toasted bread out on a cutting board. Spread half the bread slices with caramelized onion; spread remaining bread slices with sauce (save some for serving). • Cut each meatloaf crosswise into four slices; fan out slices over bread topped with caramelized onion. Close sandwiches and cut in half. • Divide sandwiches and potato wedges between plates. Serve with remaining sauce on the side for dipping.
Customer reviews
Review summary
Updated on Dec 2025- Flavor: Many loved the caramelized onions and horseradish dijonnaise sauce, which added a delicious pop of flavor to the meatloaf 🍲.
- Ease of prep: Some found it quick and easy, while others felt it was more time-consuming than expected with multiple steps.
- Suggestions: Consider adding cheese for extra flavor; toast the bread separately to prevent falling apart when assembling.
- Portions: Generous servings; some found it very filling, with enough for leftovers.
- Texture: A few noted the meatloaf was crumbly; adding an egg as a binder could help it hold together better.
Reviews from our home cooks
I love this recipe so much I ordered two this week. The horseradish dijonnaise is the best part... ties it all together and blasts the flavor profile out of this world. The sandwiches are fantastic. From the buttery crunch of the sourdough to the warm, soft, savory center that mixes with the slightly sweet carmelized onions.... Oh yeah. It's worth the heartburn.
I basically expected a "home style burger" kind of experience here but these were surprising! Maybe it was the addition of the stock concentrate with the ground meat but the texture was heavenly and unique. I finally nailed the caramelized onion with this recipe and they sat perfectly on these dimensions. I almost skipped pan toasting the sourdough - but that would have been tragic. I now couldn't imagine serving sourdough otherwise. The horseradish spread rounded up all the other elements in the sandwich beautifully.
Such a great dinner! The meatloaf came out so good. The caramelized onions were a great addition as well as the sauce. Potato wedges are so easy and delicious. I couldn't even eat both halves of my sandwich, so filling! Definitely look forward to having this one again.
Omg I wasn't expecting for this sandwich to taste so good. The recipe is quick and to the point which makes cooking fun for me. I love the buttery (slightly) toasted bread, it was perfection paired with the homemade sauce biting into the juicy meatloaf. Plus the potato wedges made it heaven. Always on the menu at our house.
The sandwiches were extremely flavorful & I will definitely be making them again! I had never made caramelized onions before, so it was a learning experience, but I also liked being able to make the sauce myself. I did add some extra seasonings to the potatoes, which I feel they did need.
Loved the flavor of this! Overall it was really good. I wish there was more of the horseradish dijonnaise! One of the potatoes and the onion was a little rotten, and I don't think this sort of potato was the best for this recipe as the wedges came out soggy and not crispy.
This was a good, and simple recipe. I should have paired it with the broccoli. The meatloaf was perfectly seasoned, and the ketchup crust, with the caramelized onion and the toasted bread with the horseradish sauce all paired together nicely.
This is one heck of a delicious sandwich!! The carmalized onions were the perfect touch and the roasted potato wedges were seasoned to perfection. My fiance and I were very impressed.
This was the absolute best sandwich ever! I don't like caramelized onion, horseradish, or Dijon mustard but I told everyone we are going to open our horizons by eating everything as sent. So glad I did. Altogether this was amazing!
The sauce made with 3 ingredients (horseradish, mayo and dijon mustard) is perfect dip for the sandwich and for the roasted potato.. love it!!!!!
