- Preheat your oven to 375°F (190°C). No one wants to bake cookies in a cold oven. That’s like jumping into a pool before the sun has warmed it up! 
- Line your baking sheets with parchment paper. This prevents sticking and leads to easier clean-up — a win-win in the baking world! 
- In a large mixing bowl, combine 4 cups of all-purpose flour, 2 teaspoons of baking soda, 2 teaspoons of baking powder, 1 teaspoon of kosher salt, and 1 teaspoon of ground cinnamon. Whisk these dry ingredients together until evenly mixed. 
- In a separate large bowl, cream together 2 cups of granulated sugar, 2 cups of firmly packed light brown sugar, and 2 cups of unsalted butter. Mix until light and fluffy. This usually takes about 2-3 minutes. 
- Add in 4 large eggs, one at a time, ensuring they are thoroughly incorporated between additions. Then, stir in 2 teaspoons of pure vanilla extract for that delightful essence. 
- Gradually add the dry mixture to the wet mixture. Stir it well until combined. 
- Now for the best part! Fold in 24 ounces of semi-sweet chocolate chips, 3 cups of assorted chopped nuts, ½ cup of shredded coconut, and 5 cups of finely ground oats. Finally, mix in the grated Hershey's milk chocolate bar for an extra touch. 
- Using a cookie scoop, drop spoonfuls of dough onto the prepared baking sheets, spacing them about 2 inches apart. Bake for 10-12 minutes, or until the edges are golden brown. Remember, the cookies will continue to cook a bit after you take them out of the oven. 
- Allow the cookies to cool on the baking sheets for a few minutes before transferring them to wire racks to cool completely. Then get ready to indulge!