S'mores Toffee Bars

Ingredients

• 10-12 sheets of graham crackers ((amount will vary, depending on the size pan you use))
• 1 cup salted butter
• 1 cup brown sugar
• 1 teaspoon pure vanilla extract
• 1 teaspoon sea salt flakes*
• 4 cups mini marshmallows
• 4 Hershey chocolate bars, (broken into pieces)
• 1 cup milk chocolate chips or chopped milk chocolate