Baking Ultra Thick Bakery Style Chocolate Chip Cookies is a straightforward process if you follow these clear steps:

1. Preheat the Oven: Start by preheating your oven to 350°F (175°C). Line two baking sheets with parchment paper.
2. Mix Dry Ingredients: In a medium bowl, whisk together the all-purpose flour, baking soda, baking powder, and salt.
3. Cream the Butter and Sugars: In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until the mixture is light and fluffy.
4. Add Eggs and Vanilla: Beat in the eggs one at a time, mixing well after each addition. Then, add the vanilla extract and mix until combined.
5. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Avoid over-mixing, as this can affect the texture.
6. Fold in Chocolate Chips: Gently fold in the semi-sweet chocolate chips and nuts if using, ensuring they are evenly distributed throughout the cookie dough.
7. Scoop the Dough: Using a cookie scoop or tablespoon, drop generous portions of dough onto the prepared baking sheets, leaving ample space between each scoop as they will spread.
8. Bake the Cookies: Place the baking sheets in the preheated oven and bake for 10-12 minutes, or until the edges are golden brown and the centers appear slightly underbaked.
9. Cool on Baking Sheet: Remove the cookies from the oven and let them cool on the baking sheets for about 10 minutes to set before transferring them to a wire rack to cool completely.
10. Enjoy: Once cooled, serve and enjoy these incredible cookies with a glass of milk or your favorite beverage.

These step-by-step instructions will guide you toward creating irresistibly thick cookies that will be a hit in any household.