Directions:
- In a large skillet, melt butter over medium heat. Add onions; reduce heat to medium- low, cover, and cook for 15 minutes, stirring occasionally.
- Uncover and increase heat to medium high.
- Continue cooking onions, stirring frequently for 3 to 4 minutes or until onions are caramel colored.
- Stir in vinegar, and remove from heat; set aside.
- Preheat oven to 400 degrees.
- Line 2 baking sheets with parchment paper.
- On a lightly floured surface roll 1 sheet puff pastry into a 16x10 inch rectangle.
- Place on prepared baking sheet.
- Using the times of a fork, prick a 1/4 inch border around the edge of the pastry.
- In a small bowl, lightly beat egg yolk; lightly brush over border of pastry. Prick remaining pastry with the tines of a fork in the 1/8 inch intervals.
- Repeat procedure with remaining pastry and beaten egg yolk.
- Bake for 12 minutes or until golden brown.
- In a small bowl combine mayo and mustard. Spread evenly over each baked pastry.
- Top each evenly with ham and cheeses.
- Spread caramelized onions evenly over cheeses.
- Bake for 8 to 10 minutes or until hot and bubbly.
- Cut into 2 1/2 inch squares.
- Serve immediately.
Nutrition Facts
| Amount Per 1 Serving | |||
| Calories | 324.17 Kcal (1357 kJ) | ||
| Calories from fat | 201.48 Kcal | ||
| % Daily Value* | |||
| Total Fat | 22.39g | 34% | |
|---|---|---|---|
| Cholesterol | 72.89mg | 24% | |
| Sodium | 435.83mg | 18% | |
| Potassium | 271.31mg | 6% | |
| Total Carbs | 17.97g | 6% | |
| Sugars | 9.73g | 39% | |
| Dietary Fiber | 2.15g | 9% | |
| Protein | 14.62g | 29% | |
| Vitamin C | 8.3mg | 14% | |
| Vitamin A | 0.1mg | 2% | |
| Iron | 0.6mg | 3% | |
| Calcium | 358.7mg | 36% | |
| Amount Per 100 g | |||
| Calories | 134.3 Kcal (562 kJ) | ||
| Calories from fat | 83.47 Kcal | ||
| % Daily Value* | |||
| Total Fat | 9.27g | 34% | |
|---|---|---|---|
| Cholesterol | 30.2mg | 24% | |
| Sodium | 180.56mg | 18% | |
| Potassium | 112.4mg | 6% | |
| Total Carbs | 7.44g | 6% | |
| Sugars | 4.03g | 39% | |
| Dietary Fiber | 0.89g | 9% | |
| Protein | 6.06g | 29% | |
| Vitamin C | 3.4mg | 14% | |
| Iron | 0.2mg | 3% | |
| Calcium | 148.6mg | 36% | |
* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.
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