Preheat your oven to 350°F (175°C). Grease a 9x13-inch baking dish.
In a mixing bowl, combine the melted butter and graham cracker crumbs. Press the mixture firmly into the bottom of the prepared baking dish to create the crust.
Pour the sweetened condensed milk evenly over the crust, ensuring full coverage.
Layer the mini chocolate chips, peanut butter chips, quick cook oats, and sweetened coconut flakes evenly over the top.
Sprinkle the Easter M&Ms as the final topping, gently pressing them into the mixture so they adhere.
Bake for 25-30 minutes, or until the edges turn golden brown and the center is set.
Allow the bars to cool completely before slicing into squares. This helps them set properly and makes for cleaner cuts.
Serve and enjoy these delightful Easter treats!