Skillet Chicken Pot Pie with Butternut Squash - Chew Nibble Nosh

Ingredients

• ¼ cup olive oil
• 1 cup frozen white pearl onions, thawed
• 4 garlic cloves, finely chopped
• 1 Tbsp. chopped fresh sage
• 1 small bunch kale, center ribs and stems removed, leaves chopped
• Kosher salt, freshly ground pepper
• ¼ cup all-purpose flour
• 3 cups chicken stock
• ½ small butternut squash, peeled, cut into ½-inch pieces (about 1½ cups)
• ½ rotisserie chicken, meat torn into bite-size pieces (about 1 1/2 – 2 cups)
• 1 sheet frozen puff pastry, thawed
• 1 large egg