Preheat the oven to 350-degrees
Line a baking sheet with parchment paper or my favorite a Silpat Mat.
In a large mixing bowl, cream together the butter and sugar.
Beat in the egg and vanilla.
Stir in the oats, baking soda, salt and flour, then fold in the chocolate chips.
Using a cookie-scoop or tablespoon, drop the cookie dough onto the prepared sheet, about 2 inches apart.
Bake until golden brown, about 10-12 minutes.
Remove and cool 5 minutes before removing to a Cooling Rack.