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- Prep Time: 20 MINS
- Cook Time: 60 MINS
- Total: 1 H 20 MINS
- Servings: 24
Ingredients
- 1 tbsp olive oil
- 1 tbsp butter
- 1 large onion peeled and diced
- 2 baking potatoes peeled and quartered
- 1 egg
- salt and ground black pepper to taste
- 2 sheets frozen puff pastry thawed
- 1/4 cup Maille® Dijon Original Mustard
- 1 egg plus 1 tbsp water for egg wash
- 1 tbsp everything bagel seasoning or sesame seeds
Preparation
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Add the olive oil, butter and diced onion to a large skillet or, ideally, a cast iron pan. Cook on medium low heat, stirring often, for 30 to 40 minutes, until the onions caramelize and deepen in color.
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While the onions are caramelizing, cook the potatoes in boiling salted water until fork tender. Drain and mash well with a potato masher. Stir in the cooked onions, check for seasoning and add salt and pepper as needed. Allow to cool.
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Once cooled, stir in the egg.
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Preheat oven to 400 degrees F.
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Roll out the sheets of puff pastry sheet to 12" x 12" and cut out 12 squares of 3" each. If you'd like to make them larger, cut 9 squares of 4" each.
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Brush each square with Maille Dijon Originale, place about a teaspoon of the potato mixture in the center of each square, fold over on a diagonal and crimp the edges with a fork.
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Bake for 15 to 20 minutes or until the pastry is a light golden brown. Serve hot with additional mustard.