How to Make Aunt Jean’s Irresistible Heath Bar Blondies at Home
If you’re a fan of Heath Bars, these Heath bar blondies are an absolute must-try! Perfect for packing in lunchboxes, enjoying after a long day at school, or just having on hand for a quick snack.
The mix of brown sugar, melted butter, and Heath bits creates this irresistibly rich and chewy texture that’s just out of this world.

Aunt Jean’s Heath Bar Blondies
Equipment
- 9 x 9 square pan
- aluminium foil
- Electric Mixer
Ingredients
- 1 cup melted butter
- 1 ¾ cups packed brown sugar
- 2 eggs
- 2 teaspoons vanilla
- ½ teaspoon salt
- 2 cups all purpose flour
- ¾ cup toffee bits (Bits o' Brickle)
- ¾ cup chocolate chips
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Instructions
- Prep. First, heat the oven to 350°F (175°C). Then, cover a 9 x 9 or 9 x 13 pan with aluminum foil, making sure there is extra foil on the sides to make handles. Remember to spray the foil with cooking spray.
- Mix wet and dry ingredients separately. In a large bowl, beat the melted butter and brown sugar with an electric mixer until well combined. Then, add the eggs and vanilla extract and beat until smooth. In a separate bowl, combine the flour and salt. Gradually add the flour mixture to the butter mixture, stirring until just combined.
- Finish batter. Add the Heath bar bits and stir gently.
- Bake. Pour the batter into the prepared pan and spread it evenly with a spatula. Then, bake for 35 minutes in a 9 x 9 pan or 25 minutes in a 9 x 13 pan, or until the blondies seem firm but slightly undercooked (they will keep cooking as they cool). Let the blondies cool entirely in the pan. After they cool, use the foil handles to take the blondies out of the pan and cut them into squares.
Notes
More Tips:
Using good-quality vanilla extract and chocolate chips can make a big difference in flavor.
When you add the flour mixture, stir until just mixed. Mixing too much can make the blondies tough instead of soft.
If you want really thick bars, use the square pan. The baking time will be about 10 minutes longer.
Make sure to use aluminum foil! Blondies will stick to the pan otherwise.
If you don’t like chocolate, just leave it out. They’re still tasty.
Be patient and let the blondies cool completely in the pan before cutting. This helps them hold together well and have the best texture.

Key Ingredients and Tools
To prepare for making blondies,here’s a list of what you’ll need and some helpful tips.

- Aluminum foil: Use aluminum foil to line the pan for easy removal of the blondies after they have cooled.
- Toffee bits (Bits o’ Brickle): These provide a delicious caramel crunch and can sometimes be tricky to find. Look for them in the baking aisle near the chocolate chips and other baking toppings.
- Electric mixer: Using an electric mixer ensures that the butter and sugar are thoroughly combined, resulting in a smooth texture for the blondies.
- Vanilla extract: Opt for high-quality vanilla extract to enhance the overall flavor of the blondies. Avoid using imitation vanilla for the best taste. Look for pure vanilla extract in the baking aisle.
Having these items on hand will help you achieve the best results when making this recipe.
Here are some good ingredient alternatives for this recipe:
- Butter: Replace it with the same amount of margarine or coconut oil instead.
- Brown sugar: You can use regular sugar and a tablespoon of molasses as a replacement.
- Toffee bits: Use chopped caramel candies or butterscotch chips as an alternative.
- Chocolate chips: Try using white chocolate chips, peanut butter chips, or chopped nuts instead.
Keep in mind that using these swaps might result in a slightly different final taste, but give them a try and see what you think!
These Heath Bar Blondies are a simple and delicious treat that everyone will love. Perfect for lunchboxes, parties, or just enjoying at home, they bring together rich flavors in a chewy, satisfying bar.
Give them a try and see how quickly they become a favorite in your household.


By Katie Shaw
Katie lives in Virginia with her husband, three daughters, a chocolate lab, and over thirty chickens. She loves creating simple tutorials for sourdough, bread, and soap. Her recipes, articles, and YouTube videos reach millions of people per year.