Preheat the Oven: Start by preheating your oven to 350°F (175°C) and line a baking sheet with parchment paper.
Mix Butter and Sugars: In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy.
Add Eggs and Vanilla: Beat in the eggs one at a time, adding the vanilla extract afterward. Make sure everything is well incorporated.
Combine Dry Ingredients: In a separate bowl, whisk together the flour, baking soda, and salt. Gradually add the dry mixture to the wet ingredients, blending thoroughly.
Add Snickers and Chocolate Chips: Gently fold in the chopped Snickers bars, chocolate chips, and peanuts until evenly distributed throughout the dough.
Scoop the Dough: Using a cookie scoop or tablespoon, drop rounded balls of dough onto your prepared baking sheet, leaving space in between for spreading.
Bake: Bake in the preheated oven for 10-12 minutes or until the cookies are golden brown around the edges, and the centers are still slightly soft—don’t overbake!
Cool and Enjoy: Once baked, let the cookies cool on the sheet for a few minutes before transferring them to a wire rack. Enjoy warm or at room temperature!