Preheat your oven to 350°F (175°C).
Line two baking sheets with parchment paper or silicone baking mats to prevent sticking and promote even baking.
Cream the butter and sugars.
In a large mixing bowl, use a hand mixer or stand mixer to beat together the softened butter, brown sugar, and granulated sugar until light and fluffy—about 2 to 3 minutes.
Tip: This step adds air to the dough, creating a soft and tender cookie.
Add the eggs and vanilla.
Crack in the eggs one at a time, mixing well after each addition. Stir in the vanilla extract until fully incorporated.
Mix the dry ingredients.
In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry mixture to the wet ingredients, mixing on low until just combined. Don’t overmix!
Fold in the good stuff.
Stir in the chocolate chips and Rice Krispies® cereal gently using a rubber spatula or wooden spoon. Be careful not to crush the cereal—you want those crispies to stay crunchy!
Scoop and shape the dough.
Use a medium cookie scoop or tablespoon to portion the dough onto your prepared baking sheets, leaving about 2 inches of space between each cookie.
Bake to golden perfection.
Bake for 9 to 11 minutes, until the edges turn a light golden color and the centers appear just set. Avoid waiting for a deep brown shade, as the cookies will finish cooking a bit while cooling.
Cool and enjoy.
Let the cookies rest on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely… if you can wait that long!