Chocolate Cinnamon Cookies

I found this recipe on Pinterest, and followed it almost exactly -- the only thing I changed was cooking time because the recommended 15 minutes made them very overdone.
These cookies smelled delicious while baking and tasted delicious when done!

yield: 4 dozen cookies

ingredients
2 1/4C flour
1/2C cocoa
1 tsp baking soda
1/2 tsp sea salt
3/4 tsp cinnamon
1C (2 sticks) butter, room temperature
1C brown sugar
3/4C sugar
1 tsp vanilla
2 eggs, room temperature
2C cinnamon chips

directions

1. Preheat oven to 375 degrees.
2. Line baking sheets with parchment paper or Silpat.
3. Combine the butter and sugars and cream together with a mixer on medium speed.
4. Slowly add in the eggs and vanilla until combined.
5. In a separate bowl, mix the flour, cocoa, baking soda, salt and cinnamon and whisk until incorporated.
6. Slowly add dry ingredients into the wet and mix.
7. Once mixture is combined add in the cinnamon chips.
8. Scoop out cookies about the size of a tablespoon and place onto prepared baking sheet.
9. Bake 10-12 minutes.
10. Let cool slightly before eating.
11. Enjoy!