This classic Blackstone French Onion Soup combines sweet caramelized onions, rich broth, and toasted bread with melted cheese. Using the griddle makes this recipe a snap because you can caramelize a ton of onions at once with all that space on the flat top!
Blackstone French Onion Soup
The key to a restaurant-quality French Onion soup is using both chicken and beef brother as well as red and white wine. The flavors blend with the sweet caramelized onions and it takes this soup to the next level.
Served with crispy, cheesy bread, this soup is a comforting and hearty meal, perfect for cooler weather or anytime you want a restaurant-quality dish at home.
Why You’ll Love This Dish
- Deeply caramelized onions – Cooking on the Blackstone enhances their natural sweetness.
- Balanced broth – A mix of chicken and beef broth with two types of wine creates a complex and rich base.
- Perfectly toasted bread – Griddling the bread ensures a crispy exterior and a soft interior.
- Smoky, melted cheese – Smoked Provolone adds a rich, slightly smoky finish.
- Great for outdoor cooking – The Blackstone griddle allows for a full meal experience outside.
Frozen Fries On The Blackstone
Blackstone French Onion Soup Grocery List
Here’s a quick run-down of what ingredients you need to make this recipe successfully. This is handy to quickly glance at to see if whipping this up will require a trip to the store. For the full ingredients, including the amounts, refer to the recipe at the bottom of the post.
Ingredients
- Sweet Onions
- Olive Oil
- Garlic
- Chicken Broth
- Beef Broth
- White Wine (Chardonnay or Pinot Grigio)
- Red Wine (Cabernet or Pinot Noir)
- Ground Thyme
- Smoked Provolone Cheese
- French Bread
Blackstone Parmesan Breaded Chicken Breasts
How To Make Blackstone French Onion Soup
Below is the quick summary of what you’re getting into if you decide to make this recipe. It is just the overview, so when you are cooking make sure to follow the complete instructions that are located at the very bottom of the page in the printable recipe card.
- Caramelize the onions – Heat the Blackstone griddle over low heat, add oil and sliced onions, and cook slowly, stirring frequently until golden brown. Add garlic and cook for 1-2 minutes.
- Prepare the broth – Combine chicken broth, beef broth, white wine, and red wine in a stock pot on the stovetop or griddle. Bring to a simmer.
- Combine ingredients – Add the caramelized onions and garlic to the simmering broth. Stir in ground thyme and let the soup simmer for 20-30 minutes.
- Toast the bread – While the soup simmers, toast slices of French bread on a lightly oiled griddle. Top with smoked Provolone cheese and cover with a dome to melt.
- Serve – Ladle the soup into bowls and top with the cheesy bread. Enjoy while hot!
FAQ
How do I store leftovers?
Store leftover soup in an airtight container in the refrigerator for up to 4 days. Keep the toasted bread separate to maintain its texture.
How do I reheat French onion soup?
Reheat the soup on the stovetop over medium heat until warmed through. Heat the bread separately on a griddle or under a broiler before serving.
Can I make this soup ahead of time?
Yes! The soup tastes even better the next day as the flavors continue to develop. Just reheat and toast fresh bread before serving.
What can I use instead of Provolone cheese?
Gruyère, Swiss, or Mozzarella work well as substitutes. If you want a sharper flavor, try aged cheddar.
Serve This With…
- A side salad with a light vinaigrette
- Roasted vegetables
- Grilled steak for a heartier meal
- A glass of red or white wine to complement the soup
📌 PIN FOR LATER 📌
Blackstone French Onion Soup
Deep, delicious French Onion Soup is cooked right on the Blackstone for the ultimate bowl of comfort food!
Ingredients
- 4 large sweet onions. sliced
- 4 tablespoons olive oil
- 2 cloves garlic
- 4 cups chicken broth
- 4 cups beef broth
- 3/4 cup white wine (like Chardonnay or Pinot Grigio)
- 3/4 cup red wine (like Cabernet or Pinot Noir)
- 1/4 teaspoon ground thyme
- 12 slices smoked Provolone cheese
- 12 slices toasted french bread
Instructions
- Preheat your griddle over low heat. Add the sliced onions and oil to the hot griddle and slowly saute, stirring and flipping frequently, until the onions are caramelized.
- Add the minced garlic at this step and cook for 1-2 minutes.
- While the onions are cooking, place the broths and wines into a stock pot on the stovetop. You can put the pot on the griddle if you want to cook it entirely on the griddle. For the best results, you'll need a griddle with multiple burners so you can run one side on high and one on low.
- Bring the stock to a simmer.
- Add the onions and garlic to the stock when the onions are done caramelizing.
- Add the thyme to the pot.
- Let the soup simmer for 20-30 minutes. During the last 10 minutes, toast rounds of French bread on a lightly oiled griddle surface. Top with cheese and cover with a dome to melt.
- Add the soup to individual serving bowls and gently drop in the cheese toasts.
- Enjoy hot!
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Nutrition Information:
Yield:
8Serving Size:
1Amount Per Serving: Calories: 609Total Fat: 22gSaturated Fat: 9gTrans Fat: 0gUnsaturated Fat: 11gCholesterol: 35mgSodium: 1949mgCarbohydrates: 70gFiber: 4gSugar: 13gProtein: 27g