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Caramelized Onion and Sweet Potato Tart

Savory Caramelized Onion and Sweet Potato Tart – A Cozy Fall Favorite

There’s something magical about the combination of caramelized onions and sweet potatoes—especially when they’re nestled together in a flaky, golden tart crust. This Caramelized Onion and Sweet Potato Tart brings out the best of fall flavors, blending savory and subtly sweet notes that create a comforting, rich experience in every bite. Perfect for a cozy breakfast, a hearty brunch, or a satisfying dinner, this tart is as versatile as it is delicious, making it a must-have on any autumn menu.

Not only does this tart deliver on flavor, but it’s also visually stunning, with vibrant layers of caramelized onions and tender sweet potatoes topped with melted cheese and a touch of fresh thyme. Whether you’re hosting a festive gathering or treating yourself to a special meal, this tart will add warmth and elegance to any occasion. Dive into this recipe to bring seasonal ingredients to life and make your kitchen feel like the heart of fall.

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Common Mistakes to Avoid When Making Caramelized Onion and Sweet Potato Tart

1. Not Fully Caramelizing the Onions

Mistake: Rushing the caramelization process by cooking onions at high heat.
Solution: Caramelizing onions takes time; cook them low and slow for about 15-20 minutes. This brings out their natural sweetness without burning, giving the tart its rich, savory depth.

2. Using a Soggy Crust

Mistake: Skipping the pre-bake step, which can lead to a soft or soggy crust once the filling is added.
Solution: Blind-bake the tart crust for about 10 minutes before adding the filling. Pricking the bottom of the crust with a fork also prevents it from puffing up.

3. Cutting Sweet Potatoes Too Thick

Mistake: Slicing the sweet potatoes too thickly, leading to uneven cooking.
Solution: Use a mandoline or sharp knife to slice the sweet potatoes thinly and evenly. This ensures they cook through and develop a tender, melt-in-your-mouth texture.

4. Overloading on Cheese or Filling

Mistake: Adding too much cheese or filling, which can make the tart overly dense or affect cooking times.
Solution: Stick to the recipe’s measurements to keep the tart balanced. A moderate amount of cheese and filling allows each ingredient to shine without overwhelming the crust.

5. Using Cold Ingredients for the Crust

Mistake: Not keeping the crust ingredients (especially butter) cold, which can result in a dense, tough crust.
Solution: Use chilled butter and ice-cold water when making the crust. This ensures a flaky, tender crust that’s perfect for a savory tart.

6. Skipping Rest Time After Baking

Mistake: Cutting into the tart immediately, causing the filling to spill or crumble.
Solution: Let the tart cool for at least 10 minutes after baking. This allows the filling to set, making it easier to slice cleanly and beautifully.

7. Ignoring Seasoning

Mistake: Forgetting to season the filling adequately, which can lead to a bland flavor.
Solution: Season each layer—sweet potatoes, onions, and cheese mix—with a little salt and pepper as you go. This brings out the full flavor of each ingredient in the tart.

Following these tips can help readers avoid common pitfalls and create a perfectly caramelized, flavorful, and beautiful Caramelized Onion and Sweet Potato Tart.

Perfect Pairings: Serving Suggestions for Caramelized Onion and Sweet Potato Tart

This Caramelized Onion and Sweet Potato Tart is a versatile dish that shines on its own but can be elevated with the right sides and drinks. Here are some pairing ideas to create a well-rounded, memorable meal:

1. Fresh Green Salad

A simple, crisp green salad with arugula, mixed greens, or spinach is a refreshing counterpoint to the rich, savory flavors of the tart. Toss the greens with a light vinaigrette, such as lemon or balsamic, to add a bit of brightness and balance to the plate.

2. Simple Soup

Pair the tart with a warm, comforting soup for a cozy meal. A creamy tomato soup, butternut squash soup, or classic French onion soup complements the tart beautifully and adds a hearty, comforting element. This pairing is perfect for a chilly fall day or a Thanksgiving starter.

3. Seasonal Beverage

To bring out the best of the tart’s fall flavors, consider serving it with a seasonal drink. A spiced apple cider (warm or chilled) pairs wonderfully, or try a sparkling cider to add a festive touch. For an evening meal, a dry white wine or a light, earthy red wine enhances the tart’s savory and sweet notes without overpowering it.

4. Special Occasions and Meal Ideas

This tart makes a fantastic addition to holiday gatherings, brunch spreads, or family dinners. It’s especially fitting for a Thanksgiving or Friendsgiving brunch, where its fall flavors and cozy appeal complement the festive season. For a relaxed weekend brunch, serve it alongside scrambled eggs and fresh fruit, creating a balanced meal that’s as nourishing as it is satisfying.

With these pairing ideas, your Caramelized Onion and Sweet Potato Tart transforms into a complete dining experience. Whether it’s a casual meal or a special occasion, these sides and beverages bring out the tart’s best qualities, making it a standout dish for any gathering.

Caramelized Onion and Sweet Potato Tart

This Caramelized Onion and Sweet Potato Tart is a savory-sweet delight, perfect for any fall meal! With layers of caramelized onions, tender sweet potatoes, and creamy cheese nestled in a flaky crust, this tart brings cozy, seasonal flavors to your table. Ideal for brunch, Thanksgiving, or a cozy dinner, it’s easy to make and full of rich, satisfying taste. Visit Satisfy Your Cravings for the full recipe and step-by-step instructions to make this flavorful tart a new favorite in your fall recipe collection!

Print Recipe Pin Recipe

Prep Time 40

Cook Time 45

Total Time 1 25

Servings: 8

Course: Dinner, Main Course

Calories: 300

Ingredients Equipment Method

Ingredients

For the Tart Crust:

1 1/2 Cups All-purpose flour
1/2 Tsp Salt
1/2 Cup Cold unsalted butter, but into cubes
4-5 Tbsp Ice water

For the Tart Filling:

2 Large sweet potatoes, peeled and sliced into thin rounds
2 Large yellow onions, thinly sliced
2 Tbsp Olive oil
1 Tbsp Butter
1 Tsp Fresh thyme leaves (or 1/2 tsp dried thyme)
Salt and pepper, to taste
3/4 Cup Ricotta cheese
1/2 Cup Grated Gruyere or cheddar cheese
2 Large eggs
1/2 Cup Milk or cream
Fresh herbs for garnish (like chives or parsley)

Equipment

Tart Pan (9-inch): For baking the tart; a removable bottom tart pan works best for easy slicing and serving.
Mixing Bowls: Various sizes for mixing the crust, filling, and other ingredients.
Pastry Cutter or Food Processor: If making the crust from scratch, a pastry cutter or food processor will help cut the butter into the flour.
Rolling Pin: To roll out the tart crust evenly.
Mandoline Slicer or Sharp Knife: A mandoline slicer is ideal for thinly slicing the sweet potatoes, but a sharp knife works as well.
Large Skillet: For caramelizing the onions.
Baking Sheet: For roasting the sweet potato slices before adding them to the tart.
Parchment Paper or Aluminum Foil: Useful for blind-baking the crust (lining it before adding pie weights).
Pie Weights or Dry Beans: Needed for blind-baking the crust to prevent it from puffing up.
Whisk: For mixing the eggs, cheese, and milk/cream for the filling.
Spatula or Wooden Spoon: For stirring and scraping the caramelized onions and filling.
Measuring cups and spoons – to ensure accurate ingredient measurements

Method

Step 1: Prepare the Tart Crust
In a large mixing bowl, combine the flour and salt.
Add the cold butter and use a pastry cutter or your fingertips to work the butter into the flour until the mixture resembles coarse crumbs.
Gradually add ice water, 1 tablespoon at a time, until the dough holds together when pressed.
Form the dough into a disk, wrap it in plastic wrap, and refrigerate for at least 30 minutes.
Tip: Keeping the butter cold is essential for a flaky crust. Avoid overworking the dough to prevent it from becoming tough.
Step 2: Caramelize the Onions
In a large skillet, heat olive oil and butter over medium heat.
Add the sliced onions and cook for about 10-15 minutes, stirring occasionally, until they are soft and caramelized. Sprinkle in thyme and season with salt and pepper.
Remove from heat and set aside.
Tip: Stirring the onions occasionally allows them to caramelize without burning. Lowering the heat toward the end of cooking brings out the onions' natural sweetness.
Step 3: Roast the Sweet Potatoes
Preheat your oven to 400°F (200°C).
Arrange the sweet potato rounds on a baking sheet, drizzle with a bit of olive oil, and season with salt and pepper.
Roast for 15-20 minutes until tender but not mushy. Set aside to cool.
Step 4: Roll Out the Tart Crust
Once chilled, roll out the dough on a lightly floured surface into a circle about 12 inches in diameter.
Carefully transfer the crust to a 9-inch tart pan, pressing it into the bottom and up the sides. Trim any excess dough.
Use a fork to prick the bottom of the crust to prevent it from puffing up during baking.
Pre-bake the crust at 400°F (200°C) for 10 minutes.
Step 5: Prepare the Filling
In a medium bowl, whisk together the ricotta cheese, grated Gruyere, eggs, and milk until smooth. Season with a pinch of salt and pepper.
Spread a thin layer of caramelized onions on the pre-baked crust.
Arrange the roasted sweet potato slices in a circular pattern on top of the onions, then pour the cheese mixture over the top.
Step 6: Bake the Tart
Lower the oven temperature to 375°F (190°C) and bake the tart for 25-30 minutes or until the filling is set and the top is golden.
Allow the tart to cool slightly before slicing.

Rustic caramelized onion and sweet potato tart surrounded by pumpkins and fall leaves.

Bring Warmth to Your Table with This Savory Tart

After preparing this Caramelized Onion and Sweet Potato Tart, you’ll have a dish that’s sure to impress and delight! With its layers of tender sweet potatoes, caramelized onions, and creamy cheese, all nestled in a flaky crust, this tart captures the essence of cozy, fall-inspired flavors. Whether you’re serving it for a holiday gathering, a weekend brunch, or a comforting dinner, this recipe brings a touch of warmth and sophistication to any occasion.

We hope you enjoy this savory tart as much as we do! Be sure to share your experience with us in the comments and let us know how it turned out. And don’t forget to check out more of our seasonal recipes to keep your table full of flavor all year round!