Line an 8" square baking pan with parchment paper or aluminum foil. Set aside.
In a large mixing bowl, stir together melted butter and brown sugar. Stir well.
Add vanilla extract and egg and stir until the egg is well incorporated.
Add dry ingredients and stir until the dough is thick and sticky.
Stir in chocolate chips.
Spread the dough in prepared pan. Bake for 20 to 25 minutes. For me the magic number was 22 minutes. The edges should be puffed up and the top appear dry but if you gently shake the pan it should still jiggle slightly.
Let the bars cool in pan completely.
Cut into squares and serve.
Notes
You can use any add-ons in this recipe: shredded coconut, butterscotch chips, lemon zest, white chocolate chips, pretzels, chocolate candy, sprinkles or funfetti OR swirl in caramel sauce or fudge sauce.
Serve blondies while still slightly warm with a scoop of ice cream for a la mode treat.
You can bake these blondies in an 8" pie pan and serve as a cookie pie.
Please note, that the nutrition value can vary depending on what product you use. The information below is an estimate. Always use calorie counter you are familiar with.