Crispy Fried Onion Scalloped Potatoes layers thinly sliced Yukon Gold potatoes in a roasted garlic béchamel, bakes them under sharp cheddar, and finishes with golden fried onion rings. This hearty side serves 8 and takes about 90 minutes to prepare. The recipe produces a creamy, bubbling interior beneath a crisp onion crust by combining white and yellow cheddar for balanced flavor.
- Prep Time
- Cook Time
- Total Time
- Servings
- 8
- Calories
- 412 per serving
- Cost/Serving
- $2.85
- Difficulty
- Medium
- Storage
- Fridge 4 days, freezer 2 months
Crispy Fried Onion Scalloped Potatoes is a comfort-food casserole of thin Yukon Gold slices baked in a roasted garlic and herb béchamel, topped with sharp cheddar and crisp fried yellow onion rings. The recipe emphasizes even slices and a stable roux-based sauce to avoid grainy or watery layers.
The dish uses a béchamel tempered with whole milk and broth so the sauce coats each potato evenly. Onions are dredged in flour and fried until golden at around 350–375°F to remain crunchy when added at the end.
Storage: Refrigerate in an airtight container up to 4 days; freeze (without fried onions) up to 2 months. Reheat covered in the oven at 350°F for about 20 minutes until hot and bubbling. Store fried onions separately to keep them crisp.
Pro Tip: Slice potatoes uniformly to 1/8-inch thickness using a mandoline so all layers cook evenly and you avoid mushy or undercooked sections.
Fried Onion Scalloped Potatoes are creamy layers of thin Yukon Gold potatoes in a garlic-and-herb béchamel, finished with melted cheddar and topped with homemade crispy fried onions. It’s a warming, showstopping side perfect for holidays or weeknight dinners.
Ready in about 90 minutes, this recipe fills the kitchen with roasted garlic and herb aromas and delivers a dish that’s creamy beneath a satisfying crunchy topping.
Why You’ll Love This Fried Onion Scalloped Potatoes Recipe
- Golden and crispy on top, creamy inside
- Roasted garlic and fresh herbs for depth
- Double cheddar for rich, melty flavor
- Made in under 90 minutes
- Great for holidays, potlucks, and family meals
- Yukon Golds give a naturally creamy texture
- Rosemary and thyme add aromatic notes
- Homemade fried onions for real crunch
- Make-ahead friendly and easy to reheat
- Can be adapted to vegetarian or other dietary needs
Ingredients for Fried Onion Scalloped Potatoes
Potatoes & Sauce:
3 lbs Yukon Gold potatoes, thinly sliced
3 tbsp butter
1 head roasted garlic, mashed
¼ cup all-purpose flour
1½ cups whole milk, room temperature
1 cup vegetable or chicken broth
1½ cups sharp cheddar cheese (½ white, ½ yellow), divided
1 tbsp fresh rosemary, finely chopped
1 tbsp fresh thyme leaves
Salt and black pepper to taste
1 tbsp Garlic of Eden seasoning
Crispy Fried Onion Topping:
1 large yellow onion, sliced into rings
2 tbsp all-purpose flour (for coating)
4 cups vegetable oil (for frying)
1 tsp kosher salt
Fresh parsley and thyme for garnish
Optional Add-Ins / Substitutions
- Gluten-Free: Substitute a gluten-free flour blend for the roux and onion coating.
- Dairy-Free: Use plant-based butter, oat milk, and vegan cheddar.
- Lower-Fat: Reduce cheese to 1 cup and use lower-fat milk.
- Spicy: Add red pepper flakes or smoked paprika to the sauce.
- Holiday Upgrade: Fold in caramelized leeks or a touch of truffle oil.
- Vegan: Swap in cashew cream, vegan butter, and plant-based cheese.
Step-by-Step Guide to Fried Onion Scalloped Potatoes
Step 1 – Prep Your Baking Dish
Preheat oven to 375°F. Generously grease a 9×13-inch baking dish with butter or oil to prevent sticking and help edges brown.
Step 2 – Make the Creamy Sauce Base
Melt 3 tbsp butter in a saucepan over medium heat. Whisk in ¼ cup flour and cook about 1 minute to form a roux. Gradually whisk in milk and broth until smooth and thickened, about 5–8 minutes.
Step 3 – Infuse with Garlic, Herbs & Cheese
Stir in roasted garlic, chopped rosemary, thyme, Garlic of Eden seasoning, salt, and pepper. Remove from heat and stir in 1 cup shredded cheddar until melted and smooth.
Step 4 – Slice and Layer the Potatoes
Thinly slice Yukon Gold potatoes (a mandoline ensures even thickness). Arrange slices in overlapping layers in the prepared dish.
Step 5 – Pour the Sauce & Add Cheese
Pour the béchamel evenly over the potatoes and sprinkle the remaining ½ cup cheddar over the top.
Step 6 – Bake Covered, Then Uncovered
Cover the dish with foil and bake for 50 minutes. Remove foil and bake an additional 15 minutes until bubbling, golden, and fork-tender.
Step 7 – Fry the Onions
While the casserole bakes, heat oil to 350°F in a deep skillet. Toss onion rings in 2 tbsp flour and fry in batches for 2–5 minutes until golden and crisp. Drain on paper towels and season with kosher salt.
Step 8 – Final Touch & Garnish
Top the hot scalloped potatoes with the fried onions and garnish with chopped parsley and extra thyme. Serve immediately to preserve the crunch.
Secrets for the Best Fried Onion Scalloped Potatoes
- Use Yukon Gold potatoes for the ideal creamy texture.
- Slice potatoes uniformly to ensure even cooking.
- A proper roux prevents a broken or grainy sauce.
- Use room-temperature milk to reduce risk of curdling.
- Roast garlic ahead for a sweeter, mellow garlic flavor.
- Keep the dish covered while baking to trap steam, then uncover to brown.
- Mix white and yellow cheddar for balanced flavor complexity.
- Fry onions in small batches to keep them crisp.
- Top with onions just before serving to maintain texture.
- Let the casserole rest 10 minutes before slicing so it firms up.
Flavor Variations & Dietary Swaps
- Healthy: Use sweet potatoes, reduce cheese, and swap in vegetable broth.
- Kid-Friendly: Omit herbs and use mild cheddar or mozzarella.
- Budget: Use russets and a single cheese variety.
- Protein Boost: Add shredded cooked chicken between layers.
- Spicy: Stir in jalapeños or pepper jack cheese.
- Vegan: Use cashew cream, vegan butter, and plant-based cheese.
- Air-Fryer Onions: Air-fry rings at 375°F for 10–12 minutes, flipping halfway.
Serving Ideas & Pairings
This scalloped potato dish pairs well with roasted or grilled proteins and a simple green salad. It also complements richer mains like beef roasts or creamy chicken dishes.
Calories & Nutrition Details (Per Serving)
Estimated per serving: Calories 420, Protein 10g, Carbs 34g, Fat 28g, Fiber 3g, Sugar 4g, Sodium 620mg. Values vary by specific ingredients used.
Best Ways to Store This Fried Onion Scalloped Potatoes
- Refrigerator: Store in an airtight container up to 4 days.
- Freezer: Freeze before adding fried onions; wrap well and store up to 1–2 months.
- Reheat: Oven: cover and reheat at 350°F for 20–25 minutes. Microwave: 2–3 minutes per serving. Reheat fried onions separately for best crunch.
FAQs About This Fried Onion Scalloped Potatoes Recipe
1. How do I get a crispy topping while keeping the interior creamy?
Bake covered for most of the time to let potatoes steam and become tender, then uncover for the last 15 minutes so the top browns. Add the fried onions right before serving to maintain crispness.
2. Can I use store-bought French fried onions?
Yes—canned French fried onions work well for convenience. Homemade fried onions usually offer fresher flavor and better texture, but either option is fine.
3. What’s the difference between caramelized and crispy onion versions?
Caramelized onions are cooked slowly and mixed into the sauce for sweetness and body. Crispy onions are fried and added on top for texture. You can combine both for depth and crunch.
4. Which onions are best for frying?
Yellow or white onions fry up golden and flavorful. Slice thin, dust with flour, and fry until golden for the best results.
5. Can I add peppers to scalloped potatoes?
Yes—sautéed bell peppers and onions layered into the dish add color and a sweet-savory element. Sauté them first so they don’t release excess moisture while baking.
More Delicious Ideas
- Try pairing with roasted chicken, seared steak, or a crisp green salad to balance the richness.
- For holiday menus, serve alongside glazed vegetables and a simple vinaigrette salad.
Final Thoughts
Fried Onion Scalloped Potatoes are a reliable crowd-pleaser: rich, cheesy, garlicky, and topped with irresistible crunch. They’re worth the little extra effort for the contrast of textures and the comforting flavors.
What herbs would you add to yours? Would you serve this for a holiday or a cozy weeknight?