Heat oven to 375°F. Line a large baking sheet with parchment paper.
In a large bowl, beat the butter, sugar, and brown sugar together until creamy. Add the eggs and vanilla and beat again, scraping sides of bowl as needed, until combined.
1 cup (227g) salted butter, 1 cup (200g) light brown sugar, 2 large eggs, 2 teaspoons pure vanilla extract, ½ cup (100g) granulated sugar
Add the oatmeal, flour, baking soda, baking powder, cinnamon, and salt, stirring just to combine. Mix in the chocolate chips, coconut, and pecans.
1 ¾ cups (247g) all-purpose flour, 1 teaspoon baking soda, ½ teaspoon baking powder, 1 teaspoon ground cinnamon, ½ teaspoon salt, 2 cups (212g) old-fashioned oatmeal, 1 ½ cups chocolate chips, 1 cup (115g) chopped pecans, 1 cup shredded sweetened coconut
Drop dough by rounded spoonfuls onto the prepared baking sheet. I prefer making these cookies extra large with my cookie scoop, which is about 2 tablespoons of dough per cookie.
Bake for 12-14 minutes until light golden brown around the edges. I prefer to underbake slightly for a chewier, softer cookie.
Cool cookies on the baking sheet for a few minutes before transferring to wire racks to cool completely.