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Caramelized Onion & Gruyere Tart

Mackenzie
  • 90 minutes
  • Serves 8

INGREDIENTS

1

Rosemary or dried herbs, Fresh

1

Egg white

3 tbsp

Dijon mustard

1 cup

All-purpose flour

1/2 tsp

Pepper

3/4 tsp

Salt

1 1/4 tsp

Sugar

3 tbsp

Ice water

6 tbsp

Butter, unsalted

2 tbsp

Butter

3/4 cup

Gruyere cheese

2

Large vidalia (sweet) onions, halved and sliced thin