Preheat oven to 350°F and line 2 large baking sheets with parchment paper. Set aside.
Add the butter and brown sugar to the bowl of a stand mixer fitted with the paddle attachment. Beat on medium speed until well combined, about 2 minutes.
½ cup salted butter, 1 cup light brown sugar
Add the egg and vanilla extract. Mix to combine. Scrape down the sides of the bowl if needed.
1 large egg, 1 teaspoon pure vanilla extract
Add the oats, flour, and baking soda. Mix again until just combined (don’t overmix).
1¼ cups old fashioned oats, ¾ cup all-purpose flour, ½ teaspoon baking soda
Gently fold in the chocolate chips, shredded coconut, and chopped pecans, making sure not to break up the nuts too much.
½ cup semisweet chocolate chips, ½ cup sweetened shredded coconut, ½ cup chopped pecans
Scoop out 2-tablespoon-sized balls and place them on the prepared baking sheets. Make sure to place them at least 2 inches apart, as the cookies will spread while baking.
Bake for 12-14 minutes, or until the cookies are just set and beginning to brown around the edges.
Allow the cookies to cool completely on the pan before serving.