1/2 cup salted butter in a 9 x 13-inch baking dish. Heat in the oven until the butter is melted and bubbly, about 3 to 5 minutes. Carefully remove from oven.
14 whole graham crackers in a zip-top bag and roll with a rolling pin, or pulse in a food processor until finely crushed, giving you 2 cups of graham cracker crumbs.
Add the crumbs directly to the baking dish and mix with the melted butter until fully combined. Press firmly into an even crust using a spatula.
Evenly sprinkle 1 cup semi-sweet chocolate chips over the crust, followed by 1 cup butterscotch morsels, 1/2 cup Heath toffee bits, 1 cup chopped pecansand 1 cup sweetened coconut flakes.
Drizzle 1 (14 ounce can) sweetened condensed milk evenly over the top of the layered ingredients.
Bake for 18 to 22 minutes, or until the edges are lightly golden and the top is set.
Cool completely in the pan on a wire rack, about 2 to 3 hours. Once cooled, cut into 24 bars.
Video
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Notes
Store in an airtight container at room temperature for up to 1 week.