Name: French Onion Potatoes
Prep time: 20 min
Cook time: 1 h 10 min
Total time: 1 h 30 min
Cuisine: French-American
Ingredients: 2 tbsp butter; 2 large yellow onions, thinly sliced; 1 tbsp olive oil; ½ tsp salt; 1 tsp sugar; 1 tsp fresh thyme leaves (or ½ tsp dried thyme); 2 lbs Yukon gold or russet potatoes, peeled and thinly sliced; 1 tbsp olive oil; ½ tsp salt; ½ tsp black pepper; 1 tsp garlic powder; ½ cup beef broth (or vegetable broth for a milder version); 1 tsp Worcestershire sauce; 1 ½ cups shredded Gruyère cheese (or Swiss cheese); ½ cup shredded mozzarella; 2 tbsp chopped fresh parsley (for garnish)

Description

If you love the deep, savory flavor of classic French onion soup, you’re going to fall head over heels for these French Onion Potatoes. This side dish combines tender, golden potatoes with caramelized onions, herbs, and gooey melted cheese for a comforting, rich flavor that’s perfect for any occasion. Whether you’re making a cozy family dinner or want an impressive holiday side, this recipe delivers every time.

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Ingredients

Scale

For the Onions:

2 tbsp butter
2 large yellow onions, thinly sliced
1 tbsp olive oil
½ tsp salt
1 tsp sugar
1 tsp fresh thyme leaves (or ½ tsp dried thyme)

For the Potatoes:

2 lbs Yukon gold or russet potatoes, peeled and thinly sliced
1 tbsp olive oil
½ tsp salt
½ tsp black pepper
1 tsp garlic powder
½ cup beef broth (or vegetable broth for a milder version)
1 tsp Worcestershire sauce

For the Topping:

1 ½ cups shredded Gruyère cheese (or Swiss cheese)
½ cup shredded mozzarella
2 tbsp chopped fresh parsley (for garnish)

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Instructions

Step 1: Caramelize the Onions
In a large skillet, melt butter with olive oil over medium heat.
Add sliced onions, salt, and sugar.
Cook for 20-25 minutes, stirring often, until onions are golden brown and caramelized.
Stir in thyme during the last 5 minutes of cooking. Set aside.

Step 2: Prepare the Potatoes
Preheat oven to 375°F (190°C).
Thinly slice peeled potatoes using a sharp knife or mandoline for even cooking.
In a large bowl, toss sliced potatoes with olive oil, salt, pepper, and garlic powder.

Step 3: Layer the Dish
Grease a 9×13-inch baking dish.
Layer half of the potatoes evenly in the dish.
Spread half of the caramelized onions over the potatoes.
Repeat with the remaining potatoes and onions.

Step 4: Add the Broth Mixture
In a small bowl, mix the beef broth and Worcestershire sauce.
Pour evenly over the layered potatoes and onions to help infuse flavor as they bake.

Step 5: Bake Covered
Cover the dish with foil and bake for 45 minutes.
Potatoes should be tender when pierced with a fork.

Step 6: Add Cheese and Finish Baking
Remove foil and sprinkle Gruyère and mozzarella cheeses evenly over the top.
Return to the oven uncovered and bake for another 15-20 minutes, until the cheese is melted and bubbling with a golden top.

Step 7: Garnish and Serve
Let rest for 5-10 minutes before serving.
Sprinkle with fresh chopped parsley for color and flavor.

Notes

Go Low & Slow with Onions – Don’t rush the caramelizing process for that deep flavor.
Slice Potatoes Evenly – This ensures they cook at the same rate.
Gruyère is Key – It melts beautifully and adds nutty depth, but Swiss or Provolone are great substitutes.
Add Crunch – Top with crispy fried onions after baking for an extra layer of texture.

Prep Time: 20 minutes
Cook Time: 1 hour 10 minutes
Cuisine: French-American