Prepare Baking Pan: Line an 8x8 inch square baking pan with parchment paper, leaving some overhang for easy removal later. Set aside.
Make the Cookie Dough Base: In a large mixing bowl, melt the butter in the microwave or on the stove until fully melted. Allow to cool slightly.
Mix Sugars and Milk: Add the brown sugar, sugar, and sweetened condensed milk to the melted butter, stirring until thoroughly combined.
Flavor It Up: Stir in the vanilla extract.
Add Flour: Gradually mix in the flour until a soft dough forms. Use a spatula or your hands to ensure it’s well combined but do not overmix.
Add Chocolate Chips: Fold in the mini chocolate chips into the cookie dough mixture.
Spread in Pan: Transfer the cookie dough mixture to the prepared baking pan and spread it evenly, pressing it down gently with your hands or a spatula.
Prepare the Fudge Topping: In a microwave-safe bowl, combine the semisweet chocolate chips and coconut oil. Microwave in 30-second intervals, stirring in between, until smooth and melted.
Pour the Fudge on Top: Pour the melted fudge over the cookie dough base, smoothing it out with a spatula.
Chill to Set: Place the pan in the refrigerator for at least 2-3 hours, or until the fudge is firm to the touch.
Slice and Serve: Once set, lift the fudge out of the pan using the parchment overhang and cut it into squares for serving.
Notes
Serve the fudge squares on a decorative plate, drizzled with additional melted chocolate for a gourmet touch. Garnish with a sprinkle of sea salt for contrast.