This Crock Pot French Onion Meatloaf transforms an old-fashioned family dinner into something extra special. A combination of ground beef and sweet Italian sausage creates a wonderfully flavorful and tender meatloaf, while sautéed poblano pepper, Parmesan cheese, and Worcestershire sauce add even more savory goodness.
The meatloaf cooks low and slow beneath a generous layer of caramelized onions. During the final few minutes, shredded Swiss cheese is sprinkled over the top and allowed to melt into the onions. The result is a hearty, comforting dinner filled with the flavors of classic French onion soup.
Best of all, the slow cooker does most of the work!
Why You’ll Love This French Onion Meatloaf
There is a lot to love about this easy crock pot dinner:
- Ground beef and Italian sausage make the meatloaf especially flavorful.
- Caramelized onions add a rich, slightly sweet flavor.
- Poblano pepper gives the meatloaf extra depth without making it overly spicy.
- Swiss cheese creates the perfect creamy, melty topping.
- The meatloaf cooks in the crock pot, leaving your oven available for side dishes.
- It is a satisfying family dinner that is perfect for busy days and chilly evenings.
Ingredients
For the caramelized onions
- 2 large onions, thinly sliced
- Oil or butter, as needed for caramelizing
For the meatloaf
- 1 poblano pepper, deseeded and diced
- 1 pound ground sweet Italian sausage
- 1 pound ground beef
- 1 cup breadcrumbs
- ½ cup grated Parmesan cheese
- ¼ cup milk
- 2 large eggs
- 1 tablespoon Worcestershire sauce
- 1 teaspoon salt
- 1 teaspoon black pepper
For the topping
- 1 cup shredded Swiss cheese
How to Make French Onion Meatloaf in the Crock Pot
1. Caramelize the onions
Heat a little butter or oil in a large skillet over medium-low heat. Add the thinly sliced onions and cook slowly, stirring occasionally, until they are soft, golden brown, and caramelized.
Caramelizing onions takes time, but it is worth the effort. Cooking them slowly allows their natural sweetness to develop and gives this meatloaf its signature French onion flavor.
Remove the onions from the skillet and set them aside.
2. Sauté the poblano pepper
Add the diced poblano pepper to the same skillet. Sauté it for several minutes, or until it has softened. Remove the pepper from the heat and allow it to cool slightly.
3. Prepare the meatloaf mixture
Place the ground sweet Italian sausage, ground beef, breadcrumbs, Parmesan cheese, milk, eggs, Worcestershire sauce, salt, pepper, and sautéed poblano pepper in a large mixing bowl.
Gently mix the ingredients until everything is evenly combined. Avoid overmixing the meat, which can make the finished meatloaf dense or tough.
4. Shape the meatloaf
Form the meat mixture into a loaf that will fit comfortably inside your slow cooker.
For easier lifting and cleanup, you can place two folded strips of heavy-duty aluminum foil in the bottom of the crock pot, crossing them to create handles. Lightly grease the foil before placing the meatloaf on top.
5. Add the caramelized onions
Transfer the shaped meatloaf to the crock pot. Spoon the caramelized onions over the top, spreading them into an even layer.
Cover the crock pot and cook on LOW for approximately 4 to 5 hours. Because slow cookers can vary, check the meatloaf with a food thermometer. It is ready when the center reaches 160°F.
6. Add the Swiss cheese
During the final 15 minutes of cooking, sprinkle the shredded Swiss cheese over the caramelized onions. Replace the lid and continue cooking until the cheese is completely melted.
7. Rest and serve
Carefully remove the meatloaf from the crock pot and let it rest for about 10 minutes before slicing. Resting helps the meatloaf hold together and allows the juices to redistribute.
Serve warm with some of the cheesy caramelized onions spooned over every slice.
Tips for the Best Crock Pot Meatloaf
Don’t rush the onions
The caramelized onions are one of the stars of this recipe. Keep the heat around medium-low and give them enough time to turn soft and golden. Raising the heat too much can cause the onions to burn before they caramelize.
Mix the meat gently
Combine the ingredients just until everything is evenly distributed. Compacting or excessively mixing the meat can produce a firm, heavy meatloaf.
Use a meat thermometer
Cooking time will depend on the size and shape of your slow cooker and the thickness of the loaf. The safest and most reliable way to know that it is done is to check that the center has reached 160°F.
Let the meatloaf rest
Allow the meatloaf to rest for approximately 10 minutes before cutting it. If you slice it immediately, it may release more liquid and fall apart.
Remove excess grease if needed
Ground beef and Italian sausage may release grease as they cook. Carefully spoon away any excess liquid from around the meatloaf before adding the Swiss cheese.
What to Serve With French Onion Meatloaf
This cheesy French onion meatloaf pairs beautifully with traditional comfort-food side dishes. Try serving it with:
- Creamy mashed potatoes
- Roasted garlic potatoes
- Buttered egg noodles
- Green beans
- Roasted carrots
- Steamed broccoli
- A simple garden salad
- Warm dinner rolls
Mashed potatoes are especially delicious because they soak up the rich juices and cheesy onion topping.
Storing and Reheating Leftovers
Allow leftover meatloaf to cool before transferring it to an airtight container. Store it in the refrigerator for up to three or four days.
Individual slices can be reheated in the microwave. To reheat a larger portion, place it in a covered baking dish and warm it in the oven until heated through. Adding a small splash of beef broth can help prevent the meatloaf from drying out.
You can also freeze the cooked meatloaf. Wrap individual slices tightly and place them in a freezer-safe container. Thaw them overnight in the refrigerator before reheating.
A Comforting Slow Cooker Dinner
This Crock Pot French Onion Meatloaf is anything but ordinary. The flavorful combination of ground beef, sweet Italian sausage, sautéed poblano pepper, caramelized onions, and melted Swiss cheese makes every bite rich and satisfying.
It is an easy way to give traditional meatloaf a delicious new personality—and it is sure to become a comforting family favorite.
If you tried this recipe, please let me know in the comments how it turned out for you. Did you make any changes? Would you make it again?
Crock Pot French Onion Meatloaf
Ingredients
Method
- How to Make French Onion Meatloaf in the Crock Pot
- Caramelize the onions
- Heat a little butter or oil in a large skillet over medium-low heat. Add the thinly sliced onions and cook slowly, stirring occasionally, until they are soft, golden brown, and caramelized.
- Caramelizing onions takes time, but it is worth the effort. Cooking them slowly allows their natural sweetness to develop and gives this meatloaf its signature French onion flavor.
- Remove the onions from the skillet and set them aside.
- Sauté the poblano pepper
- Add the diced poblano pepper to the same skillet. Sauté it for several minutes, or until it has softened. Remove the pepper from the heat and allow it to cool slightly.
- Prepare the meatloaf mixture
- Place the ground sweet Italian sausage, ground beef, breadcrumbs, Parmesan cheese, milk, eggs, Worcestershire sauce, salt, pepper, and sautéed poblano pepper in a large mixing bowl.
- Gently mix the ingredients until everything is evenly combined. Avoid overmixing the meat, which can make the finished meatloaf dense or tough.
- Shape the meatloaf
- Form the meat mixture into a loaf that will fit comfortably inside your slow cooker.
- For easier lifting and cleanup, you can place two folded strips of heavy-duty aluminum foil in the bottom of the crock pot, crossing them to create handles. Lightly grease the foil before placing the meatloaf on top.
- Add the caramelized onions
- Transfer the shaped meatloaf to the crock pot. Spoon the caramelized onions over the top, spreading them into an even layer.
- Cover the crock pot and cook on LOW for approximately 4 to 5 hours. Because slow cookers can vary, check the meatloaf with a food thermometer. It is ready when the center reaches 160°F.
- Add the Swiss cheese
- During the final 15 minutes of cooking, sprinkle the shredded Swiss cheese over the caramelized onions. Replace the lid and continue cooking until the cheese is completely melted.
- Rest and serve
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