Instructions:

• Step 1: Preheat the Oven - Begin by preheating your oven to 350°F (175°C). This ensures your blondies will bake evenly.
• Step 2: Prepare the Baking Dish - Grease an 8x8-inch baking dish with cooking spray or line it with parchment paper for easy removal later.
• Step 3: Mix Dry Ingredients - In a medium bowl, whisk together the all-purpose flour, baking powder, baking soda, and salt. Set this mixture aside.
• Step 4: Combine Wet Ingredients - In a separate large bowl, mix the melted butter and brown sugar until well combined. Add the egg and vanilla extract, mixing until smooth and creamy.
• Step 5: Combine Wet and Dry Ingredients - Gradually add the dry ingredient mixture to the wet ingredients, stirring until just combined. Be careful not to overmix, as this can affect the texture of your blondies.
• Step 6: Fold in Chocolate Chips and M&M's - Gently fold in the semi-sweet chocolate chips and M&M's, ensuring they are evenly distributed throughout the batter.
• Step 7: Bake - Pour the batter into the prepared baking dish, spreading it evenly. Bake in the preheated oven for 20-25 minutes, or until a toothpick inserted into the center comes out clean.
• Step 8: Cool and Cut - Once baked, remove the blondies from the oven and let them cool in the pan for about 10 minutes before transferring them to a wire rack to cool completely. Once cooled, cut into squares and enjoy!