Preheat the Oven: Preheat your oven to 350°F (175°C). Grease a 9x13 inch baking dish or line it with parchment paper for easy removal.
Mix Peanut Butter and Sugars: In a large mixing bowl, combine the creamy peanut butter, granulated sugar, and brown sugar. Mix until well blended.
Add Wet Ingredients: Slowly add the melted butter, eggs, and vanilla extract into the mixture. Stir until everything combines beautifully.
Incorporate Dry Ingredients: Gradually fold in the flour until fully incorporated.
Stir in Chocolate Chips and Toffee Bits: Gently fold in the chocolate chips and toffee bits.
Spread in the Baking Dish: Pour the mixture into the prepared baking dish, spreading it evenly across the bottom.
Bake: Bake in the preheated oven for 25-30 minutes or until the edges are golden and the center is set.
Cool and Cut: Allow the bars to cool in the pan before cutting them into squares. Enjoy!