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Crockpot French Onion Salisbury Meatballs with Garlic Mashed Potatoes

Crockpot French Onion Salisbury Meatballs - featured image
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Tender Salisbury-style meatballs simmered in a rich French onion gravy, topped with melty cheese and served over creamy garlic mashed potatoes. This easy crockpot recipe is the ultimate comfort food for cozy family dinners or meal prep.

Ingredients

Scale
  • 1 1/2 lbs ground beef (80% lean, or turkey/chicken)
  • 3/4 cup panko breadcrumbs
  • 1/3 cup milk (dairy or unsweetened non-dairy)
  • 1 large egg, beaten
  • 2 tbsp Worcestershire sauce
  • 1/2 small yellow onion, finely minced
  • 1 tsp garlic powder
  • 1 tsp kosher salt
  • 1/2 tsp black pepper
  • 2 tbsp chopped parsley (optional)
  • 2 large yellow onions, thinly sliced
  • 2 tbsp unsalted butter
  • 2 cups beef broth (low-sodium preferred)
  • 1 tbsp Worcestershire sauce
  • 2 tbsp all-purpose flour
  • 1 tsp dried thyme (or 1 tbsp fresh leaves)
  • 1 bay leaf (optional)
  • 1 cup shredded Gruyère or Swiss cheese
  • Kosher salt & black pepper (to taste)
  • 2 lbs Russet or Yukon Gold potatoes, peeled and cut into chunks
  • 4 garlic cloves, smashed
  • 4 tbsp unsalted butter (plus extra for serving)
  • 1/2 cup milk or half-and-half, warmed
  • Kosher salt (to taste)
  • Black pepper (to taste)
  • Fresh chives or parsley (for garnish, optional)

Instructions

  1. Caramelize the onions: In a large skillet over medium heat, melt 2 tbsp butter. Add 2 large thinly sliced onions and cook, stirring often, until deep golden brown and fragrant (10-15 minutes). If short on time, skip this step and caramelize onions in the crockpot.
  2. Prepare the meatball mixture: In a large bowl, combine ground beef, panko breadcrumbs, milk, beaten egg, Worcestershire sauce, minced onion, garlic powder, kosher salt, black pepper, and parsley. Mix gently until just combined.
  3. Shape the meatballs: Form mixture into golf ball-sized meatballs (about 20-24 meatballs). For firmer texture, brown them in a hot skillet or under the broiler for 2-3 minutes per side (optional).
  4. Layer in the crockpot: Place caramelized onions in the bottom of the crockpot. Sprinkle over flour and toss gently. Arrange meatballs in a single layer on top.
  5. Add the French onion gravy: Whisk together beef broth, Worcestershire sauce, thyme, and bay leaf. Pour over meatballs and onions. Gently stir to submerge. Cover and cook on LOW for 4-5 hours or HIGH for 2-3 hours.
  6. Make the garlic mashed potatoes: About 30-40 minutes before meatballs are done, add peeled potato chunks and smashed garlic cloves to a pot of salted water. Boil until fork-tender (15-20 minutes). Drain well. Mash with butter and warmed milk or half-and-half. Season with salt and pepper. Stir in chives or parsley if desired.
  7. Add the cheese: Once meatballs are tender, sprinkle shredded cheese over the top. Cover and let melt for 5-10 minutes (optional: broil for a golden top).
  8. Finish & serve: Remove bay leaf from gravy. Taste and adjust seasoning. Serve meatballs and gravy over garlic mashed potatoes, garnished with fresh herbs.

Notes

For gluten-free, use gluten-free breadcrumbs and flour. For dairy-free, substitute butter and milk with plant-based alternatives. Browning meatballs before slow cooking adds flavor and structure. Caramelizing onions deeply enhances the gravy. Leftovers keep well and flavors deepen overnight.

Nutrition

Keywords: crockpot, slow cooker, French onion, Salisbury meatballs, comfort food, mashed potatoes, easy dinner, family meal, beef, cheese, gravy

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