Preheat your oven to 350°F. Line a baking sheet with parchment paper. This keeps the cookies from sticking. It also makes cleanup much easier after baking. Set the prepared baking sheet aside while you make the dough.

In a medium bowl, combine the flour, baking soda, and salt. Stir everything together until evenly mixed. This step helps the cookies bake evenly and gives them the perfect soft texture every single time.

Place the softened butter, brown sugar, and granulated sugar into a large bowl. Beat with an electric mixer until light and fluffy. This usually takes about two to three minutes for the best cookie texture.

Crack the eggs into the butter mixture one at a time. Mix well after each egg. Add the vanilla extract and stir again. The dough should look creamy, smooth, and slightly fluffy at this stage.

Slowly add the dry ingredients into the wet mixture. Stir gently until a soft cookie dough forms. Do not overmix the dough because it can make the cookies turn dense instead of soft.

Add the butterscotch chips and chocolate chips into the dough. Use a spatula or spoon to fold everything together carefully. Make sure the chips spread evenly so every cookie gets plenty of flavor.

Use a cookie scoop or spoon to place dough balls onto the prepared baking sheet. Leave space between each cookie because they spread slightly while baking in the hot oven.

Bake the cookies for 10 to 12 minutes. The edges should look lightly golden while the centers stay soft. Let the cookies cool on the baking sheet for five minutes before moving them.

Transfer the cookies to a cooling rack. Let them cool completely before serving. Enjoy them with cold milk or hot coffee for the perfect homemade dessert treat that everyone will love.