INGREDIENTS
1/2 cup
unsalted butter, at room temperature
1 cup
light or dark brown sugar
2
large eggs
1/2 tsp
vanilla extract
1 1/2 cups
all-purpose flour
1/4 tsp
ground cinnamon
1 tsp
baking soda
1/2 tsp
salt
2 cups
old-fashioned oats
1 cup
(170 grams) chopped semi-sweet or dark chocolate