Step 1 – Prep the Oven

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

Step 2 – Cream Butter & Sugars

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

Step 3 – Add Wet Ingredients

Mix in the eggs one at a time, followed by the vanilla extract.

Step 4 – Combine Dry Ingredients

In a separate bowl, whisk together the flour, baking soda, cinnamon, and salt. Gradually add this mixture into the wet ingredients until well combined.

Step 5 – Fold in Oats & Mix-Ins

Stir in the oats, dried cranberries, and chopped walnuts until evenly distributed throughout the dough.

Step 6 – Scoop & Bake

Drop about 2 tablespoons of dough per cookie onto the prepared baking sheets. Bake for 10–12 minutes, until the edges are golden but centers remain soft.

Step 7 – Cool & Serve

Let cookies cool on the baking sheet for 5 minutes, then transfer to a wire rack.