Step 1

Preheat your oven to 350°F (175°C). Line two baking sheets with parchment paper.

Step 2

In a large mixing bowl, cream together the softened butter, brown sugar, and granulated sugar until light and fluffy.

Step 3

Beat in the eggs one at a time, then mix in the vanilla extract.

Step 4

In another bowl, whisk together the flour, baking soda, cinnamon, and salt.

Step 5

Gradually add the dry ingredients to the wet mixture until just combined.

Step 6

Fold in the rolled oats and any optional add-ins such as raisins, nuts, or chocolate chips.

Step 7

Scoop about 2 tablespoons of dough onto the prepared baking sheets, spacing cookies about 2 inches apart.

Step 8

Bake for 10–12 minutes, or until the edges are lightly golden while the centers remain soft.

Step 9

Allow the cookies to cool on the baking sheet for 5 minutes before transferring them to a wire rack to cool completely.