1-Gathering and Preparing Your Ingredients: Before we jump into the fun, make sure all your ingredients are ready to go think of it as setting the stage for a baking adventure! Start by pulling out your butter and egg to reach room temperature; this helps everything mix smoothly and gives you that fluffy texture we all crave. Oh, and don’t forget to heat-treat the flour for the frosting to keep things safe it’s a simple step that makes a big difference!

2-Making the Cookie Dough: Let’s get those cookies started! In a large bowl, beat 3/4 cup (12 Tbsp; 170g) unsalted butter, 3/4 cup (150g) packed light or dark brown sugar, and 1/4 cup (50g) granulated sugar until they’re super creamy it should take about 2 minutes with your mixer. Then, add in 1 large egg at room temperature and 2 teaspoons pure vanilla extract, beating until everything is nicely combined. In another bowl, whisk together 2 cups (250g) all-purpose flour, 2 teaspoons cornstarch, 1 teaspoon baking soda, and 1/2 teaspoon salt. Add this dry mix to your wet ingredients and beat on low speed until just combined, then fold in 1 cup (180g) mini chocolate chips on low speed. Cover the dough and chill it in the fridge for at least 1 hour to prevent it from spreading too much in the oven trust me, this step is a game-changer!

3-Whipping Up the Frosting: While your dough chills, it’s frosting time! Beat 1/2 cup (8 Tbsp; 113g) unsalted butter until it’s creamy, about 1 minute. Next, mix in 3/4 cup (150g) packed light brown sugar until combined, then beat in 1 teaspoon pure vanilla extract, 1 cup + 2 Tablespoons (140g) heat-treated all-purpose flour, and 1/2 teaspoon salt until everything is mixed well. Add 1/4 cup (60ml) milk and beat for another 2 minutes until the frosting is nice and creamy, then fold in 1 cup (180g) mini chocolate chips. Set it aside and let those flavors mingle your patience will pay off!

4-Baking the Cookies: Preheat your oven to 350°F (177°C) and line your baking sheets with parchment paper for easy cleanup. After chilling, let the dough sit at room temperature for 10 minutes to make it easier to handle. Roll the dough into 1-tablespoon balls and place them on the sheets. Bake for 8-10 minutes until the edges turn a golden brown keep an eye on them so they don’t overbake! Let the cookies cool on the sheet for 5 minutes, then transfer them to a rack to cool completely. This step ensures they stay chewy and delicious, perfect for sandwiching later.

5-Assembling Your Sandwiches: Now for the best part: assembly! Once your cookies are fully cooled, grab your frosting and spread a generous amount between two cookies to make a sandwich. If you’re looking for more baking inspiration, try out this caramelized banana and dark chocolate recipe for a fun twist. Aim for 14-15 sandwiches with this batch, and enjoy the fruits of your labor each one is like a little pocket of happiness! The total prep time is about 2 hours including chilling, cooking takes 10 minutes, and you’re looking at around 2 hours and 50 minutes total, including cooling.