5.0 from 12 votes
Sweet Onion Puff Pastry Tart
Sweet Onion Puff Pastry Tart is an easy peasy but oh-so-elegant tart for lunch or brunch. Cut it into small squares for an appetizer. Use Vidalia, Maui or generic sweet onions for this fabulous tart.
Prep Time
10 mins
Cook Time
10 mins
Total Time
45 mins
Servings: 6 servings
Calories: 447 kcal
Course:
Appetizer
Cuisine:
American
Ingredients
- 1/2 cup mayonnaise
- 1/4 tsp onion salt
- fresh cracked black pepper, to taste
- 3/4 cup shredded sharp white cheddar cheese
- 1 heet frozen puff pastry
- 1 medium sweet onion, peeled and sliced into very thin rings I use my mandoline slicer set at 1/8 inch
- 1 Tbsp Olive oil, for brushing
- a few sprigs fresh thyme for serving
Instructions
- Preheat oven to 400F and line a large baking sheet with parchment paper.
- Mix together the mayo, onion salt, pepper, and cheese. Set aside.
- Gently roll out the puff pastry so that it is a little longer and wider, about 2 iches longer and an inch wider. (Puff pastry is already rolled, but you want it just a little bit thinner.) With the tip of a sharp knife, score all the way around the outside of the pastry, about 1/2 inch in from the edge, to make a frame. With a fork, pierce the pastry inside your frame several times.
- Bake the puff pastry in the preheated oven for 10 minutes. It might get quite puffy in the middle, no worries.
- Remove the pastry from the oven, deflate the center a little bit by piercing it with a fork, and gently spread the mayo mixture across the whole rectangle inside the scored lines. Top with the thinly sliced onion (you may not need to use all your slices, depending on the size of your onion), and brush lightly with the olive oil.
- Immediately return to the oven and bake for 25-30 more minutes until the pastry is a rich golden brown. Scatter some fresh thyme leaves over the tart and serve warm.
Cup of Yum
Nutrition Information
Calories
447kcal
(22%)
Carbohydrates
23g
(8%)
Protein
7g
(14%)
Fat
37g
(57%)
Saturated Fat
9g
(45%)
Trans Fat
1g
Cholesterol
23mg
(8%)
Sodium
409mg
(17%)
Potassium
108mg
(3%)
Fiber
1g
(4%)
Sugar
3g
(6%)
Vitamin A
155IU
(3%)
Vitamin C
3mg
(3%)
Calcium
119mg
(12%)
Iron
1mg
(6%)
Nutrition Facts
Serving: 6servings
Amount Per Serving
Calories 447
% Daily Value*
| Calories | 447kcal | 22% |
| Carbohydrates | 23g | 8% |
| Protein | 7g | 14% |
| Fat | 37g | 57% |
| Saturated Fat | 9g | 45% |
| Trans Fat | 1g | 50% |
| Cholesterol | 23mg | 8% |
| Sodium | 409mg | 17% |
| Potassium | 108mg | 2% |
| Fiber | 1g | 4% |
| Sugar | 3g | 6% |
| Vitamin A | 155IU | 3% |
| Vitamin C | 3mg | 3% |
| Calcium | 119mg | 12% |
| Iron | 1mg | 6% |
* Percent Daily Values are based on a 2,000 calorie diet.