French Onion Potatoes

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French Onion Potatoes

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Savory, cheesy, and packed with rich caramelized onion flavor, these French Onion Potatoes are a mouthwatering side dish that’s sure to steal the spotlight. Tender baby potatoes are roasted to golden perfection and smothered in a creamy, cheesy French onion-style sauce that tastes like your favorite soup—turned into the ultimate comfort food casserole.

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Why You’ll Love This Recipe
Full of Flavor – Caramelized onions and melty cheese bring deep, savory richness.
Easy to Make – Minimal ingredients, maximum taste.
Crowd Favorite – Perfect for holidays, family dinners, or potlucks.
Pairs with Everything – A delicious side for steak, chicken, or roasts.
Comfort Food Classic – Creamy, cheesy, and incredibly satisfying.

Ingredients You’ll Need

For the Potatoes:

  • 2 lbs baby Yukon Gold or red potatoes, halved
  • 2 tbsp olive oil
  • 1 tsp garlic powder
  • ½ tsp salt
  • ½ tsp black pepper

For the French Onion Sauce:

  • 2 tbsp butter
  • 1 large yellow onion, thinly sliced
  • ½ tsp sugar (helps with caramelization)
  • 2 cloves garlic, minced
  • 1 tbsp all-purpose flour
  • ¾ cup beef broth (or vegetable broth)
  • ½ cup sour cream
  • 1 cup shredded Swiss or Gruyère cheese (or a mix)
  • ½ tsp thyme (dried or fresh)
  • Salt and pepper to taste

Optional Garnish:

  • Chopped parsley
  • Extra cheese for topping

Tools You’ll Need

  • Large skillet
  • 9×13-inch baking dish
  • Knife and cutting board
  • Mixing bowl
  • Aluminum foil

Step-by-Step Instructions

Step 1: Roast the Potatoes

  1. Preheat oven to 400°F (200°C).
  2. Toss halved potatoes with olive oil, garlic powder, salt, and pepper.
  3. Spread in a single layer on a baking sheet and roast for 25–30 minutes, or until fork-tender and golden brown.
  4. While potatoes roast, make the French onion sauce.

Step 2: Caramelize the Onions

  1. Melt butter in a large skillet over medium heat.
  2. Add sliced onions and sugar, and cook slowly, stirring often, for 15–20 minutes, until golden and caramelized.
  3. Add garlic and cook 1 minute more.

Step 3: Make the Sauce

  1. Sprinkle flour over the caramelized onions and stir to coat.
  2. Slowly pour in the broth while whisking to avoid lumps. Simmer for 2–3 minutes until thickened.
  3. Stir in sour cream, thyme, and ½ cup shredded cheese. Season with salt and pepper to taste.
  4. Remove from heat once cheese is melted and sauce is creamy.

Step 4: Assemble the Dish

  1. Transfer roasted potatoes to a greased 9×13-inch baking dish.
  2. Pour the French onion sauce over the potatoes and toss gently to coat.
  3. Top with remaining ½ cup cheese.

Step 5: Bake and Serve

  1. Cover with foil and bake at 375°F (190°C) for 15 minutes.
  2. Remove foil and bake another 5–10 minutes until cheese is melted and bubbly.
  3. Garnish with chopped parsley and serve warm.

Tips for the Best French Onion Potatoes
Use Baby Potatoes – They roast faster and have a creamy interior.
Caramelize Low and Slow – Don’t rush the onions for the richest flavor.
Choose a Melty Cheese – Swiss, Gruyère, or mozzarella all melt beautifully.
Make Ahead – Prepare everything up to the final bake, refrigerate, then bake fresh.
Double for a Crowd – This dish disappears fast—easily double the recipe!

Serving Suggestions
With Roast Chicken – A classic pairing for Sunday dinner.
Next to Steak – A gourmet alternative to fries or mashed potatoes.
With a Green Salad – Add contrast and freshness to your plate.
Holiday Side – Perfect addition to Thanksgiving or Christmas menus.

How to Store & Reheat

Storing:
Refrigerate: Store in an airtight container for up to 4 days.
Freeze: Best eaten fresh, but can be frozen. Reheat with extra broth or cream.

Reheating:
Oven: Reheat at 350°F for 15–20 minutes, covered with foil.
Microwave: Heat in 60-second intervals until warmed through.

Frequently Asked Questions

  1. Can I use another type of potato?
    Yes, russets or fingerlings work well—just chop into bite-sized pieces.
  2. Is this gluten-free?
    Use a gluten-free flour blend in the sauce and it’s good to go!
  3. Can I use Greek yogurt instead of sour cream?
    Absolutely—it will be slightly tangier but still creamy.
  4. What can I substitute for beef broth?
    Vegetable broth or chicken broth both work well as alternatives.
  5. Can I add protein to make it a full meal?
    Yes! Add cooked, shredded chicken or crumbled turkey sausage before baking.

Final Thoughts
Creamy, cheesy, and irresistibly savory, these French Onion Potatoes are the cozy side dish your dinner table’s been missing. Whether you’re serving them with a simple weeknight meal or dressing them up for a holiday feast, their rich flavor and melty goodness are sure to make them a new favorite.

Try them out and let me know what you think! Don’t forget to leave a review below and share your photos on Pinterest! I can’t wait to see how your dish turns out.
Preparation Time: 15 minutes
Cooking Time: 45 minutes
Cuisine: American

Nutritional Information (Per Serving):
Calories: 320 | Protein: 8g | Carbohydrates: 28g | Fat: 20g | Fiber: 3g | Sodium: 420mg

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French Onion Potatoes

French Onion Potatoes


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  • Author: Emily
  • Total Time: 1 hour

Description

Savory, cheesy, and packed with rich caramelized onion flavor, these French Onion Potatoes are a mouthwatering side dish that’s sure to steal the spotlight. Tender baby potatoes are roasted to golden perfection and smothered in a creamy, cheesy French onion-style sauce that tastes like your favorite soup—turned into the ultimate comfort food casserole.

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Ingredients

Scale

For the Potatoes:

  • 2 lbs baby Yukon Gold or red potatoes, halved

  • 2 tbsp olive oil

  • 1 tsp garlic powder

  • ½ tsp salt

  • ½ tsp black pepper

For the French Onion Sauce:

  • 2 tbsp butter

  • 1 large yellow onion, thinly sliced

  • ½ tsp sugar (helps with caramelization)

  • 2 cloves garlic, minced

  • 1 tbsp all-purpose flour

  • ¾ cup beef broth (or vegetable broth)

  • ½ cup sour cream

  • 1 cup shredded Swiss or Gruyère cheese (or a mix)

  • ½ tsp thyme (dried or fresh)

  • Salt and pepper to taste

Optional Garnish:

  • Chopped parsley

  • Extra cheese for topping


Instructions

Step 1: Roast the Potatoes

  1. Preheat oven to 400°F (200°C).

  2. Toss halved potatoes with olive oil, garlic powder, salt, and pepper.

  3. Spread in a single layer on a baking sheet and roast for 25–30 minutes, or until fork-tender and golden brown.

  4. While potatoes roast, make the French onion sauce.

Step 2: Caramelize the Onions

  1. Melt butter in a large skillet over medium heat.

  2. Add sliced onions and sugar, and cook slowly, stirring often, for 15–20 minutes, until golden and caramelized.

  3. Add garlic and cook 1 minute more.

Step 3: Make the Sauce

  1. Sprinkle flour over the caramelized onions and stir to coat.

  2. Slowly pour in the broth while whisking to avoid lumps. Simmer for 2–3 minutes until thickened.

  3. Stir in sour cream, thyme, and ½ cup shredded cheese. Season with salt and pepper to taste.

  4. Remove from heat once cheese is melted and sauce is creamy.

Step 4: Assemble the Dish

  1. Transfer roasted potatoes to a greased 9×13-inch baking dish.

  2. Pour the French onion sauce over the potatoes and toss gently to coat.

  3. Top with remaining ½ cup cheese.

Step 5: Bake and Serve

  1. Cover with foil and bake at 375°F (190°C) for 15 minutes.

  2. Remove foil and bake another 5–10 minutes until cheese is melted and bubbly.

  3. Garnish with chopped parsley and serve warm.

Notes

Use Baby Potatoes – They roast faster and have a creamy interior.
Caramelize Low and Slow – Don’t rush the onions for the richest flavor.
Choose a Melty Cheese – Swiss, Gruyère, or mozzarella all melt beautifully.
Make Ahead – Prepare everything up to the final bake, refrigerate, then bake fresh.
Double for a Crowd – This dish disappears fast—easily double the recipe!

  • Prep Time: 15 minutes
  • Cook Time: 45 minutes
  • Cuisine: American

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