Cheesy Caramelized Onion Hand Pies - PantryLink Recipes

Ingredients

• 3 tablespoons unsalted butter , divided
• 0.5 packages white button mushrooms , 8 ounce
• 2 large yellow onions , halved and thinly sliced
• 2 slices crisp cooked bacon , crumbled
• 2 tablespoons balsamic vinegar
• 1 teaspoon maple syrup
• 0.5 teaspoons dried thyme
• salt and ground black pepper to taste
• 2 unbakeds pie crusts , 9 inch
• 1 egg
• 1 tablespoon milk
• 0.67 cups shredded Gruyere cheese