1-Getting Started with Preparation: Start by preheating your oven to 350°F (175°C) to ensure even baking. Line a 9-inch pie dish with parchment paper and lightly grease it for easy removal later. This step sets the foundation for a cookie pie that bakes up just right, with edges that turn lightly golden.

2- Now, grab a large bowl and beat the 10 tablespoons of softened unsalted butter with 1/2 cup light brown sugar and 1/4 cup granulated sugar until the mixture is smooth and creamy. This creates the base of your dough, giving it that perfect chewy texture. Add in 1 large egg and 1 1/2 teaspoons pure vanilla extract, mixing until everything blends together nicely.

3-Mixing the Dry Ingredients: Next, combine the dry ingredients in a separate bowl. This includes 1 1/2 cups all-purpose flour, 1 1/2 teaspoons cornstarch, 1/4 teaspoon baking soda, and 1/4 teaspoon kosher salt. Gradually mix these into your wet mixture to form the dough. For more on basic baking techniques, check out our baking basics guide to perfect your skills.

4- Once the dough comes together, stir in 1/2 cup chocolate chips and 1/3 cup candy-coated chocolates by hand. This adds the fun bursts of color and flavor that make this Mm Cookie Pie so special. Press the dough evenly into your prepared pie dish, using wet fingertips if it sticks, and top with additional candy-coated chocolates for extra appeal.

5-Baking and Cooling: Bake the pie for 20 to 25 minutes, keeping an eye on it until the edges are lightly golden but the center stays slightly underdone for that chewy goodness. Let it cool completely on a wire rack before moving on. This step helps the pie set, making it easier to frost and serve.

6- For the frosting, beat 3 tablespoons softened unsalted butter with 1 1/3 cups powdered sugar, 2 tablespoons cocoa powder if you want chocolate frosting, 1/2 teaspoon pure vanilla extract, and 1 tablespoon milk or cream. Adjust the consistency with more milk or sugar as needed, then pipe it around the edges and decorate with more candies and sprinkles. This Mm Cookie Pie yields 8 servings, each with about 519 calories, 73 grams carbohydrates, 5 grams protein, 24 grams fat, 15 grams saturated fat, and 52 grams sugar. It’s best enjoyed at room temperature on the day it’s made, and leftovers can be refrigerated for up to 3 days or frozen for up to 2 months, then thawed before serving.