Preheat oven to 350F. Line two large cookie sheets with parchment paper or grease two large cookie sheets with butter.
In a large bowl, use a fork or a whisk to cream together the melted butter and the sugar, until they are well combined and the butter is no longer separated from the sugar. This will take a couple of minutes, keep stirring!
Add 2 eggs and vanilla extract, and whisk together until fully combined.
Add the flour, baking powder, salt, and cinnamon, and whisk together.
Add the oatmeal. Using a fork, mix everything together really well.
Add the craisins and the pecans, and mix them into the cookie dough.
Using a tablespoon measure, place neat mounds of cookie dough about 2 inches apart on your cookie sheet. Gently press down a bit to flatten them just a little.
Bake 10-12 minutes, or until the cookies start to turn golden brown around the edges and are fully cooked. I think that the cookies that were nicely caramelized on the bottom tasted the best.
Remove from oven, and allow to cool for at least 5 minutes before using a spatula to remove them from the cookie sheet. If you try too soon they will crumble and fall apart!
You can cut down the butter to 1.5 sticks (12 tablespoons)
You can cut down the eggs to 1 egg, if you're short on eggs
You can use raisins or dried cherries instead of craisins, or skip the pecans