Creating these delicious Chocolate Chip Oatmeal Bars is a simple process. Just follow these steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C). Grease a 9×9-inch baking pan or line it with parchment paper for easy removal.

2. Mix Dry Ingredients: In a large mixing bowl, combine rolled oats, flour, brown sugar, granulated sugar, baking soda, and salt. Stir until well combined.

3. Combine Wet Ingredients: In another bowl, whisk together the melted butter, egg, and vanilla extract until smooth.

4. Mix Together: Pour the wet ingredients into the dry ingredients and stir until just combined. Be careful not to overmix.

5. Add Chocolate Chips: Fold in the chocolate chips and nuts, if using, until evenly distributed throughout the mixture.

6. Transfer to Baking Pan: Spread the mixture evenly in the prepared baking pan, pressing it down gently with a spatula.

7. Bake: Place in the preheated oven and bake for 25-30 minutes, or until the edges are golden brown and a toothpick inserted in the center comes out clean.

8. Cool: Remove from the oven and allow the bars to cool in the pan for about 10-15 minutes. Then, lift them out using the parchment paper and let them cool completely on a wire rack.

9. Cut into Bars: Once cooled, slice into squares or rectangles of your desired size.

These steps will guide you through creating the most amazing Chocolate Chip Oatmeal Bars with ease!