Step 1

Preheat oven to 350 degrees F (175 degrees C). Lightly grease a 10x15-inch baking pan.

Step 2

Cream white sugar, brown sugar, and butter together in a bowl. Mix in peanut butter and eggs until smooth. Stir in oats, baking soda, and vanilla extract. Add chocolate chips and milk chocolate pieces. Spread in the greased baking pan.

Step 3

Bake in the preheated oven until lightly brown on top, about 15 minutes. Be careful not to overbake.