• Preheat your oven to 350 degrees
• Prepare a 9”x13” baking dish by spraying with non-stick baking spray and lining the bottom with parchment paper

Make the oat layer...

• In a large bowl, use an electric hand mixer to cream 1 cup of room temperature butter with 2 cups of brown sugar
• Add 2 large eggs, 2 teaspoon of vanilla extract and 1/3 cup of milk and mix until creamy
• Add 2 1/2 cups of all purpose flour, 3 cups of oats and 1 teaspoon of salt and use a silicone spatula to mix until just combined
• Press 2/3 of the oat mixture into the prepared baking dish and set the remaining oat mixture aside for now

Make the chocolate fudge layer...

• In a microwave safe bowl or double boiler, carefully melt down 14 ounces of sweetened condensed milk and 12 ounces of chocolate chips until completely smooth and combined
• Pour this mixture over the oat layer and spread evenly

Make the peanut butter layer....

• In a microwave safe bowl or double boiler, melt 1 1/2 cups of creamy peanut butter and stir until smooth 
• Drizzle the peanut butter evenly over the fudge layer
• Crumble the remaining oat mixture over the peanut butter layer and top with pretzel pieces and a light sprinkling of flaky sea salt

Bake the bars...

• Bake the bars in a 350 degree oven for 25 minutes
• Allow the bars to cool completely before transferring the bars out of the baking dish onto a cutting board and slicing
• Store leftovers in an airtight container at room temperature or the refrigerator