Preheat oven to 350 degrees
In a large bowl, mix together 12 tablespoons of room temperature butter with 3/4 cup of brown sugar and 1/2 cup of sugar until light and fluffy. You can do this by hand with a whisk or with a stand mixer using a paddle attachment
Add 2 eggs and 2 teaspoons of vanilla extract and mix until the batter is smooth
In a medium bowl, combine 1 1/2 cups of all purpose flour, 1 teaspoon of baking soda, 1/2 teaspoon of cinnamon and 1/2 teaspoon of salt
Add the combined dry ingredients into the wet batter and mix until fully incorporated
Add 3 1/4 cups of oats in three parts, mixing as you add
Add 3/4 cup of chopped dried cherries, 3/4 cup of chopped pecans and 3/4 cup of chopped chocolate and mix until evenly distributed
Place 1 heaping tablespoon of cookie dough onto ungreased baking sheets
Bake at 350 degrees for about 12 minutes
As soon as you see the edges begin to brown, remove them from the oven and allow them to cool on the baking sheet for 10 minutes
Transfer the cookies onto a cooling rack to cool fully
Store leftovers in an airtight container at room temperature