1-First Step: Mise en place Measure all ingredients for your chocolate chip bars. Soften butter at room temperature. Chop nuts if using. This setup keeps things smooth for busy schedules.

2-Second Step: Mix dry ingredients Whisk flour, baking soda, and salt in a bowl. This ensures even distribution in chewy cookie bars. For gluten-free, use certified blend here.

3-Third Step: Cream butter and sugars Beat butter, granulated sugar, and brown sugar until light and fluffy, about 2 minutes. Add vanilla. This step builds structure for thick chocolate chip cookie bars. Use a mixer for ease.

4-Fourth Step: Incorporate eggs Add eggs one at a time, beating well after each. Scrape bowl sides. For vegan, mix in flax eggs now. The mixture should look smooth for soft cookie bars.

5-Fifth Step: Combine wet and dry Gradually mix dry ingredients into wet on low speed. Avoid overmixing to keep bar cookies tender. Fold in chocolate chips and nuts gently.

6-Sixth Step: Spread in pan Press dough evenly into prepared pan using wet hands or spatula. For even thick chocolate chip cookie bars, aim for uniform depth. Chill 30 minutes optional for extra chew.

7-Seventh Step: Bake Bake 23-27 minutes until golden edges and soft center. Rotate pan halfway. Overbaking dries out easy chocolate chip cookie bars; check at 23 minutes.

8-Eighth Step: Cool and cut Cool in pan 30 minutes, then on rack. Cut into 24 bars. Vegan or low-cal versions bake same time.

9-Final Step: Serve Enjoy warm or room temp. Pair with milk or [funfetti greek yogurt muffins](https://todayrecipehub.com/funfetti-greek-yogurt-muffins/) for dessert spread. Store extras properly.