Caramelized Onion Anchovy Tart - Reese® Specialty Foods

Ingredients

• 12 Reese Flat Anchovies , drained
• 3 tbsp white balsamic vinegar
• 3 tbsp DaVinci Extra Virgin Olive Oil
• 3 tbsp unsalted butter
• 2 medium onions, sliced thin
• 4 cloves garlic, minced
• 1 sheet frozen puff pastry
• 2 vine-ripe tomatoes, sliced thin
• 1 tbsp fresh oregano, chopped
• 1 egg, beaten
• Salt and pepper, to taste