Slow Cooker 3-Ingredient French Onion Beef Recipe
Published by: Iqra Channel 88
Updated: June 26, 2025
Views: 14,204
Looking for a no-fuss, mouthwatering meal with minimal ingredients? This Slow Cooker 3-Ingredient French Onion Beef is your answer. With just a beef chuck roast, onions, and a packet of French onion soup mix, you can create a flavorful, tender, and juicy dish that tastes like it’s been simmering in a French kitchen all day.
Why You’ll Love This Recipe
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Only 3 ingredients
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Dump-and-go convenience
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Ultra-tender, juicy beef
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Budget-friendly and family-approved
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Perfect for meal prep, sandwiches, or a hearty dinner
Ingredients
To make this delicious slow cooker beef, you’ll need:
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2 pounds beef chuck roast
(Boneless, well-marbled for best flavor) -
2 large onions, thinly sliced
(Yellow or sweet onions work best) -
1 packet (1 oz) French onion soup mix
(Any store-bought dry soup mix will do)
Step-by-Step Instructions
🔪 Step 1: Prepare the Onions
Peel and thinly slice the onions. These will serve as the bed for the roast and add that sweet, caramelized flavor as they cook down.
Tip: Use a mandoline for even slicing and quicker prep.
Step 2: Layer in the Slow Cooker
Place all the sliced onions at the bottom of the slow cooker insert. Then lay the beef chuck roast directly on top of the onions.
Step 3: Add the Seasoning
Sprinkle the entire packet of French onion soup mix evenly over the beef. No need to add any extra salt or liquid—the onions and beef will release enough moisture as they cook.
Step 4: Cook Low and Slow
Cover the slow cooker with the lid and cook on LOW for 8 hours.
Don’t lift the lid during cooking—this helps keep the heat and moisture in for fall-apart tenderness.
Step 5: Shred and Mix
Once the beef is fork-tender, use two forks to shred the meat directly in the slow cooker. Mix it thoroughly with the cooked onions and savory juices.
Serving Suggestions
This versatile dish pairs well with:
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Mashed potatoes or buttery egg noodles
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Crusty sandwich rolls for a French Dip-style sandwich
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Steamed veggies or roasted green beans
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Serve over rice or cauliflower mash for a low-carb option
Storage & Reheating
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Fridge: Store leftovers in an airtight container for up to 4 days
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Freezer: Freeze in a sealed bag for up to 3 months
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Reheat: Gently reheat in a skillet or microwave with a splash of broth
Expert Tips
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Use a fatty cut: Chuck roast works best due to its rich marbling.
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Add garlic or mushrooms for extra flavor if you want to elevate it beyond 3 ingredients.
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Deglaze for depth: Add 1/4 cup of beef broth if you want extra juices (optional).