01 -
Preheat oven to 175°C (350°F). Line a 9-inch round cake pan or springform pan with parchment paper and lightly grease.
02 -
In a large mixing bowl, cream softened butter, brown sugar, and granulated sugar until light and fluffy using a hand or stand mixer.
03 -
Add the whole egg, egg yolk, and vanilla extract to the creamed mixture. Mix until smooth and creamy.
04 -
In a separate bowl, whisk together all-purpose flour, cornstarch, baking soda, and salt until evenly blended.
05 -
Gradually add the dry ingredients to the wet mixture, stirring just until combined to avoid overmixing.
06 -
Fold in 1 cup (about 170 g) of pastel M&Ms gently. Press the dough evenly into the prepared pan and sprinkle the remaining M&Ms on top.
07 -
Bake for 18 to 22 minutes, or until the edges turn lightly golden and the center remains slightly soft.
08 -
Allow the cake to cool completely in the pan to set. Once cooled, pipe green buttercream frosting around the edges to simulate grass and garnish with speckled mini chocolate eggs.