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Crockpot French Onion Soup with Cheesy French Toast (VIDEO!!) | halfbakedharvest.com @hbharvest
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3.97 from 129 votes

Crockpot French Onion Soup with Cheesy French Toast.

It's crockpot french onion soup! It really doesn't get too much easier, as you will see in the video!
Prep Time15 mins
Cook Time13 hrs 20 mins
Total Time13 hrs 35 mins
Course: Main Course, Soup
Cuisine: American, French
Keyword: cheesy, crockpot, french onion soup, french toast
Servings: 6
Calories: 648kcal
Author: halfbakedharvest


  • 6 tablespoons butter cubed
  • 4 sweet onions thinly sliced
  • 2 cloves garlic minced or grated
  • 2 tablespoons brown sugar
  • 1 tablespoon worcestershire sauce
  • 1 1/2 tablespoons flour
  • 1 cup of your favorite beer OR red wine
  • 2 quarts beef broth
  • 2 leaves bay
  • 3-4 fresh thyme sprigs + more for serving
  • large pinch of pepper

Cheesy French Toast

  • 2 eggs
  • 3/4 cup milk
  • 1/4 cup grated parmesan cheese
  • pinch of salt + pepper
  • 6-8 slices thick cut french bread
  • 2 tablespoons butter
  • 8 ounces gruyere cheese shredded


  • To the bowl of your crockpot, add the butter, onions, garlic, brown sugar and worcestershire sauce. Stir everything together, cover the crockpot and cook on low for at least 8 hours or up to 14 hours. I like cooking the onions overnight while I sleep (note that I have noticed that all crockpots cook differently, if yours seems to cook fast, check the onions at 8 hours in to make sure nothing is burning).
  • The next morning, stir the flour into the onions and then add the beer (or wine), beef broth, bay leaves, thyme and a good pinch of pepper. Cover and cook on low for 6-8 hours or on high for 3-4 hours. The longer and slower you can cook this the better. Taste and season with salt + pepper if needed.
  • Just before you're ready to eat, make the french toast. In a shallow bowl, whisk together the eggs, milk, parmesan and a pinch of salt + pepper.
  • Preheat the broiler to high.
  • Heat a large skillet over medium heat and add the butter to melt.
  • Submerge one piece of toast at a time into the egg mixture, allowing it to sit 30 seconds in the eggs. Remove and allow the excess to drip off back into the bowl. Place the toast on the hot skillet and cook until golden brown, about 3 minutes per side. Repeat with the remaining bread.
  • Ladle the french onion soup into oven safe ramekins or bowls. Place 1-2 pieces of toast on top of the soup and cover with cheese. Place the ramekins on a baking sheet and place under the broiler for 30 seconds to 1 minute, or until the cheese is melted. WATCH close, the broiler works quick!
  • Serve the soup with fresh thyme and enjoy hot, right out of the oven!

To Make this soup on the stove

  • Heat a large heavy bottomed soup pot over medium-high heat and add the butter. Add the onions + brown sugar and cook about 10 minutes, stirring frequently, until softened. Add the worcestershire sauce and let it cook into the onions. Continue to slowly cook the onions until they are golden brown and caramelized, about 10-15 minutes.
  • Once the onions have caramelized, add the garlic and cook 30 seconds, then stir the flour into the onions and add the beer (or wine), beef broth, bay leaves, thyme and a good pinch of pepper. Cover and cook over low heat for 30 minutes or until ready to serve. Taste and season with salt + pepper if needed. Continue with the french toast as directed above.


Calories: 648kcal | Carbohydrates: 94g | Protein: 43g | Fat: 49g | Saturated Fat: 28g | Cholesterol: 214mg | Sodium: 841mg | Potassium: 958mg | Fiber: 5g | Sugar: 28g | Vitamin A: 1550IU | Vitamin C: 18.3mg | Calcium: 868mg | Iron: 6.4mg