Crockpot Hamburger Vegetable Soup

Crockpot Hamburger Vegetable Soup

The beef and onion start browning in the skillet, and that savory smell is the first hint this soup will taste like more than a slow cooker full of broth.…

By Willow • • Reading time: 9 min
Tip: save now, cook later.

The beef and onion start browning in the skillet, and that savory smell is the first hint this soup will taste like more than a slow cooker full of broth. Crockpot Hamburger Vegetable Soup is the kind of hands-off meal I lean on when I want a full pot ready without babysitting it. The beef goes in with tomatoes and broth, while the slow cooker gives the potatoes time to turn tender and soak up the seasoned liquid.

I like that this recipe has a clear rhythm: brown the beef first, let the slow cooker handle the longer cook, then finish with frozen vegetables near the end. That last addition keeps the vegetables from spending the entire cook in the pot. The result is a hearty soup with plenty of distinct bites, from soft potato to tender carrots, and a broth that tastes savory and tomato-rich.

Crockpot Hamburger Vegetable Soup with tender vegetables
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Kitchen Note

Keep the Yukon Gold potatoes in evenly sized 1-inch pieces. When the chunks are close in size, they soften at about the same pace instead of leaving you with a mix of tender little pieces and firm larger ones.

Save this crockpot hamburger vegetable soup for a cozy, hands-off dinner with tender potatoes and a tomato-rich broth.

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Why the Frozen Vegetables Need Their Own Finish

Frozen mixed vegetables are already blanched before freezing, so they don’t need the same long cooking time as the raw potatoes and carrots. Adding them near the end lets them heat through without sitting in the slow cooker for hours. That matters in a soup like this: vegetables that cook too long can lose their shape and blend into the broth, while a shorter finish keeps their colors and individual textures more noticeable.

There is a useful distinction between getting the soup cooked and getting every vegetable cooked well. The potatoes need enough time to become fork-tender, but the frozen vegetables only need to be hot. I stir them in after the main cook, cover the slow cooker again, and give them the shorter finish. If you add the bag at the beginning, the soup will still cook, but those vegetables will be softer by serving time. Keeping the timing separate gives the potatoes their long, gentle cook without asking the mixed vegetables to endure it too.

Why Yukon Golds and Canned Tomatoes Suit This Broth

Crockpot Hamburger Vegetable Soup with colorful vegetables
  • Yukon Gold potatoes — Their creamy texture holds up well in soup without turning as floury as a starchier potato can. Cut them into even pieces so they soften together. Red potatoes are a reasonable stand-in if that’s what you have; they also hold their shape, though the finished soup will have a slightly different texture.
  • Ground beef — The 85% lean blend brings plenty of beef flavor while still releasing some fat as it browns. That fat needs to be drained before the meat goes into the slow cooker, so the broth doesn’t end up with a greasy layer. A leaner blend will be less rich; a fattier one leaves more excess to drain.
  • Diced tomatoes with their juices — The canned tomatoes bring acidity and tomato flavor along with liquid, so use the whole can rather than draining it. Canned diced tomatoes are a dependable choice here; fresh tomatoes vary in juiciness and won’t give quite the same consistent base.
  • Low-sodium beef broth — It gives the soup a savory backbone while leaving room for the measured kosher salt. Regular broth can work, but the finished soup may taste saltier, so taste before adding any extra seasoning.
  • Dried basil, oregano, and bay leaf — These herbs season the broth over the long cook. Dried herbs suit a slow cooker because their flavor has time to move through the liquid; keep the bay leaf whole so it’s easy to spot and remove before serving.
  • Frozen mixed vegetables — The bag makes the final vegetable addition simple and consistent. Add them while still frozen; there’s no need to thaw them first, and thawing would only add an extra task.

Brown the Beef First, Then Let the Slow Cooker Take Over

Brown the beef and onion in the skillet

Set a 12-inch skillet over medium-high heat and cook the ground beef with the diced onion, breaking the beef into crumbles as it cooks. It should be browned and reach 160°F, which takes 7 to 9 minutes. Drain the excess fat, then add the minced garlic and cook for 30 seconds. Garlic needs only that brief time in the hot skillet; letting it cook much longer can make it taste bitter.

Build the slow-cooker base

Transfer the beef mixture to a 6-quart slow cooker. Add the carrots, celery, potatoes, diced tomatoes with their juices, beef broth, basil, oregano, kosher salt, black pepper, and bay leaf. Stir until the ingredients are distributed through the liquid rather than leaving the seasonings in one spot. Keep the lid on once cooking begins so the slow cooker can hold its heat.

Cook until the potatoes turn tender

Cover and cook on LOW for 6 to 7 hours or on HIGH for 3 to 4 hours. The potatoes are the clearest doneness cue: a fork should slide into a piece without meeting a firm center. Slow cookers can vary, so use the tenderness cue along with the cooking window. If the potatoes are still firm, give the soup more time on the same setting.

Finish with the frozen vegetables

Stir in the frozen mixed vegetables, cover, and cook until they’re hot: 1 hour on LOW or 30 to 45 minutes on HIGH. Check that the vegetables are heated through before serving, especially if the pieces are on the larger side. Find and remove the bay leaf before ladling the soup into bowls. The broth should be steaming, with the vegetables still easy to distinguish.

Three Small Changes for a Different Kind of Bowl

A lower-starch, potato-free version

Leave out the potatoes for a lighter, brothier soup with less starch. The carrots and frozen vegetables still make each serving substantial, but the bowl won’t have the same creamy, hearty bite as the original.

A milder celery-free pot

Skip the celery if you want its savory, slightly herbal note to be less prominent. The soup will still have sweetness from the carrots and onion, with a simpler aromatic base.

Beef, potatoes, and tomato without the mixed vegetables

Leave out the frozen mixed vegetables for a more focused beef-and-potato soup. You’ll get fewer colors and vegetable textures in the bowl, while the tomato broth and slow-cooked potatoes remain at the center.

Storage and Reheating

  • Refrigerator: Store in a covered container for 3 to 4 days. The potatoes may absorb some broth, so the soup can be thicker after chilling.
  • Freezer: Freeze in airtight, freezer-safe containers for up to 2 to 3 months for best quality. Leave a little room at the top, and expect the potatoes to soften more after thawing.
  • Reheating: Reheat gently in a saucepan, stirring occasionally, until the soup reaches 165°F. Avoid a hard boil, which can break down the vegetables and potatoes.

Questions That Come Up While This Soup Cooks

Can I use ground turkey instead of ground beef?+

Yes. The soup will taste lighter and less beefy, but ground turkey works in the same role. Brown it with the onion and cook it to 165°F before transferring it to the slow cooker.

Can I prepare the vegetables the night before?+

Yes. Peel and slice the carrots, slice the celery, and dice the onion ahead; keep them covered in the refrigerator. Cut potatoes closer to cooking time so they don’t discolor while they sit. Keep the frozen mixed vegetables in the freezer until they’re added.

Can I make the full batch in a 4-quart slow cooker?+

I wouldn’t use a 4-quart cooker for the full batch. The six cups of broth plus the beef and vegetables need the room of a 6-quart slow cooker, and a smaller crock could be too full to cook evenly.

Can I cook this soup overnight on LOW?+

I wouldn’t plan on an overnight cook. The LOW setting is designed for 6 to 7 hours here; much longer can leave the potatoes overly soft and the vegetables less distinct. Start it when you can be near the end of that window.

Crockpot Hamburger Vegetable Soup

Crockpot hamburger vegetable soup cooks low and slow with ground beef, potatoes, and a mix of vegetables for a hearty, tender soup. Frozen mixed vegetables go in near the end so they heat through while keeping their texture.
Prep Time 15 minutes
Cook Time 8 hours 10 minutes
Total Time 8 hours 25 minutes
Servings: 8 servings
Course: Dinner
Cuisine: American
Calories: 430

Ingredients
  

  • 1.5 lb ground beef 85% lean
  • 1 yellow onion medium, diced
  • 3 cloves garlic minced
  • 4 carrots medium, peeled and sliced
  • 3 celery ribs, sliced
  • 1.5 lb Yukon Gold potatoes cut into 1-inch pieces
  • 1 can (28 oz) diced tomatoes with their juices
  • 6 cup low-sodium beef broth
  • 1 tsp dried basil
  • 1 tsp dried oregano
  • 0.75 tsp kosher salt
  • 0.5 tsp black pepper
  • 1 bay leaf
  • 1 bag (12 oz) frozen mixed vegetables

Equipment

  • 1 12-inch skillet
  • 1 6-quart slow cooker

Method
 

  1. In a 12-inch skillet over medium-high heat, cook the ground beef and onion, breaking up the beef, until browned and the beef reaches 160°F, 7 to 9 minutes.
  2. Drain excess fat.
  3. Add the garlic and cook for 30 seconds.
  4. Transfer the beef mixture to a 6-quart slow cooker and add the carrots, celery, potatoes, tomatoes, broth, basil, oregano, salt, pepper, and bay leaf; stir to combine.
  5. Cover and cook on LOW for 6 to 7 hours or HIGH for 3 to 4 hours, until the potatoes are fork-tender.
  6. Stir in the frozen mixed vegetables, cover, and cook on LOW for 1 hour or HIGH for 30 to 45 minutes, until hot.
  7. Remove the bay leaf before serving.

Notes

For the best texture, add the frozen mixed vegetables during the final cooking step. Refrigerate leftovers for 3 to 4 days or freeze them; this soup freezes well. For a lower-sodium variation, use no-salt-added diced tomatoes and adjust the kosher salt to taste.
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Willow

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