1-Start: Start by preheating your oven to 350 degrees Fahrenheit and lining baking sheets with parchment paper. This sets the stage for even baking and easy cleanup. Measure all ingredients ahead to keep things smooth and stress-free.

2-Next: In one bowl, whisk together the flour, baking soda, cornstarch, and salt until well combined. In another bowl, mix the melted butter with both sugars until smooth, then stir in the egg, egg yolk, and vanilla extract.

3-Combine: Combine the wet and dry mixtures just until blended, avoiding over-mixing to keep the cookies tender. Fold in the butterscotch chips and toffee pieces for that signature flavor and crunch. For more baking insights, try the tips from 5 tips to improve your next batch of cookies.

4-Roll and Bake: Roll the dough into balls using about 1½ tablespoons each and place them 2 inches apart on the sheets. Bake for 10 to 12 minutes until the edges are lightly browned but the centers stay soft. Let the cookies cool on the pan for 10 minutes before moving them to a wire rack.

5-Cooling: This method ensures chewy cookies every time, as the centers will firm up while cooling. It’s a simple process that works well for baking enthusiasts or community events.