These butterscotch zucchini bars are a moist and sweet dessert that cleverly incorporates fresh garden vegetables. They offer a rich, blondie-like texture with a deep caramel flavor profile.
List of ingredients
- 1 cup (227g) butter, room temperature – provides richness and structure.
- 1 3/4 cup (350g) brown sugar, packed – adds sweetness and a molasses flavor.
- 2 large eggs, room temperature – binds the ingredients together.
- 1 teaspoon vanilla – enhances the overall flavor profile.
- 2 cups (250g) all-purpose flour – the main thickening agent.
- 1 teaspoon baking powder – helps the bars rise slightly.
- 1/4 teaspoon salt – balances the sweetness.
- 1 1/2 cup finely grated and drained zucchini, packed – adds moisture and tenderness.
- 1 1/2 cups butterscotch morsels – provides the signature sweet flavor.
step-by-step instructions
- Prep the oven and pan: Preheat your oven to 350°F. Grease a 9×13 inch baking pan with non-stick spray or use the butter and flour method to prevent sticking.
- Cream butter and sugar: In a large mixing bowl, combine the room temperature butter and packed brown sugar. Use a hand-held mixer to beat them together until the mixture is lighter and fluffier.
- Incorporate wet ingredients: Add the room temperature eggs and vanilla extract to the butter mixture. Mix for 1 to 2 minutes until fully combined, scraping the sides of the bowl as necessary.
- Blend dry ingredients: Stir in the all-purpose flour, baking powder, and salt. Mix on a medium-low speed until the ingredients are just combined.
- Fold in zucchini: Add the finely grated and drained zucchini to the batter and mix on low speed. The batter should be runny; if it seems too dry, let it rest for 5 minutes before proceeding.
- Add butterscotch chips: Stir in 1 cup of the butterscotch morsels using a spatula to distribute them evenly.
- Fill and top the pan: Pour the batter into the prepared 9×13 pan. Sprinkle the remaining 1/2 cup of butterscotch morsels over the top.
- Bake and test: Bake for 40 minutes. Check for doneness by inserting a toothpick; it should come out with a few crumbs but no wet batter. The edges and top should be dark golden brown.
Preparation Secrets for Best Results
Use the Fine Side of the Grater
Grating the zucchini with the fine side of the box grater ensures that the vegetable blends seamlessly into the batter. Coarser pieces create a more noticeable texture and visible green chunks in the finished bar.
Manage Zucchini Moisture Carefully
Lightly drain the zucchini after grating to remove excess surface liquid. You want the zucchini to release its juices during the baking process, but too much initial moisture can make the batter too thin.
Ensure Ingredients Reach Room Temperature
Using room temperature butter and eggs is essential for creating a stable emulsion. This results in a more uniform batter and a better rise, preventing the fats from separating during mixing.
Quickly Warm Cold Eggs
If you forget to take eggs out of the fridge, place them in a bowl of warm water for a few minutes. This quickly brings them to temperature without cooking the whites, allowing them to incorporate smoothly into the creamed butter.
Ingredient Substitutions
Alternative Flour Options
For a denser, nuttier profile, you can replace half of the all-purpose flour with whole wheat pastry flour. If using a gluten-free blend, choose a 1:1 baking flour that includes xanthan gum to maintain the structure.
Different Sugar Varieties
Dark brown sugar can be used instead of light brown sugar to provide a more intense molasses flavor. This will also result in a slightly darker color in the final baked bars.
Egg Replacements
To make this recipe egg-free, replace each egg with a flax egg (1 tablespoon ground flaxseed mixed with 3 tablespoons water). Alternatively, 1/4 cup of unsweetened applesauce per egg can provide similar moisture.
Butter Alternatives
Unsalted butter is preferred to control the salt level, but salted butter works if you reduce the added salt by a pinch. For a dairy-free option, use a plant-based butter stick that is firm at room temperature.
Flavor Variations
Chocolate Chip Twist
Replace the butterscotch morsels with semi-sweet or milk chocolate chips. This transforms the bars into a classic chocolate zucchini blondie that appeals to a wider range of tastes.
Adding Crunch with Nuts
Fold in 1/2 cup of chopped walnuts or pecans along with the morsels. The earthy flavor of the nuts balances the sweetness of the butterscotch and adds a necessary textural contrast.
White Chocolate Variation
Use white chocolate chips instead of butterscotch for a creamier, milkier taste. This version pairs exceptionally well with a pinch of extra cinnamon in the dry ingredients.
Dried Fruit Mix-ins
Adding 1/2 cup of dried cranberries or chopped dried apricots provides a tart contrast to the rich sugar. Stir these in at the same time as the butterscotch morsels.
Baking and Troubleshooting
Preventing Pan Sticking
While non-stick spray is efficient, lining the pan with parchment paper provides the safest release. This allows you to lift the entire block of bars out of the pan for perfectly clean slicing.
Adjusting Based on Oven Calibration
Oven temperatures can vary; start checking for doneness at the 35-minute mark. Use a digital thermometer to ensure the center has reached a stable temperature if you are unsure about the toothpick test.
Handling Dry Batter
If the batter looks dry after adding zucchini, let it sit for 5 minutes. The salt and sugar draw moisture out of the zucchini cells, which naturally thins the batter to the correct consistency.
Identifying Overbaked Bars
Overbaked bars lose their moist crumb and may become crumbly or dry. If the edges are burnt but the center is still wet, lower the oven temperature by 25 degrees for the final few minutes.
Serving and Presentation
Cooling for Clean Cuts
Allow the bars to cool completely in the pan before slicing. Cutting into hot bars can cause them to compress or tear, whereas cooled bars hold their shape and provide clean edges.
Adding Decorative Drizzles
Melt a small handful of butterscotch chips with a teaspoon of butter in the microwave. Drizzle the melted mixture over the cooled bars for a professional, bakery-style finish.
Pairing Suggestions
Serve these bars with a glass of cold milk or a cup of black coffee. The bitterness of the coffee cuts through the sweetness of the butterscotch, creating a balanced snack.
Storage and Preservation
Room Temperature Storage
Store the bars in an airtight container at room temperature for up to 3 to 4 days. Ensure they are completely cool before sealing the container to prevent condensation from making the tops sticky.
Refrigeration Methods
Keeping the bars in the refrigerator extends their shelf life to about one week. Chilling them also makes the texture denser and fudgier, which some people prefer.
Freezing Instructions
Wrap individual bars tightly in plastic wrap and place them in a freezer-safe bag. They can be stored in the freezer for up to 3 months without losing quality.
Thawing Process
Thaw frozen bars in the refrigerator overnight for the best texture. Alternatively, they can be left at room temperature for 2 hours before serving.
Reheating Guide
Microwave Method
To bring back the gooey texture, microwave a single bar for 10 to 15 seconds. Be careful not to overheat them, as the butterscotch chips can become very hot and cause burns.
Oven Reheating
Place bars on a baking sheet and heat at 300°F for about 5 minutes. This method warms the bars evenly and slightly crisps the edges without melting the chips completely.
Make-Ahead Strategies
Preparing Batter in Advance
You can prepare the batter up to 4 hours in advance and keep it in the refrigerator. However, be aware that baking powder begins to lose its potency once mixed with wet ingredients.
Baking a Day Early
Baking the bars the day before serving allows the flavors to meld and the structure to set. Store them covered at room temperature or in the fridge until you are ready to slice them.
Frequently Asked Questions
Can I use yellow zucchini?
Yes, yellow zucchini works perfectly as a substitute for green zucchini. The flavor is virtually identical, and it will simply change the color of the small flecks in the bars.
Why are my bars too soft?
Excessive softness is usually caused by using zucchini that wasn’t drained enough or underbaking. Ensure you use the toothpick test and drain the grated zucchini lightly before adding it.
Can I use a different pan size?
If you use an 8×8 inch pan, the bars will be much thicker. You will need to increase the baking time by 10 to 15 minutes and check the center carefully with a toothpick.
How do I store these long term?
The best long-term storage is the freezer. Wrapping them individually prevents freezer burn and allows you to enjoy a single treat whenever you like.
Print
Butterscotch Zucchini Bars
- Total Time: 50 minutes
- Yield: 24 servings 1x
- Diet: Vegetarian
Description
Ever had a blondie? This one tastes AMAZING but just happens to be loaded with zucchini!
Ingredients
- 1 cup (227g) butter, room temperature
- 1 3/4 cup (350g) brown sugar, packed
- 2 large eggs, room temperature
- 1 teaspoon vanilla
- 2 cups (250g) all-purpose flour
- 1 teaspoon baking powder
- 1/4 teaspoon salt
- 1 1/2 cup finely grated and drained zucchini, packed
- 1 1/2 cups butterscotch morsels
Instructions
- Step 1: Preheat oven to 350°F. Spray a 9×13 pan with non-stick spray or use the butter & flour method.
- Step 2: In a large bowl add the butter and brown sugar. Using a hand-held mixer, cream them together until they are lighter and fluffier.
- Step 3: Add the eggs and vanilla to the butter mixture and mix until fully combined, 1-2 minutes. Scrape down the bowl as needed.
- Step 4: Add the flour, baking powder, and salt to the bowl and mix on medium-low until just combined.
- Step 5: Add in the zucchini and mix on low. It should be a runny mixture. If it appears dry at all, let it sit for 5 minutes.
- Step 6: Add in 1 cup of butterscotch morsels and stir with a spatula.
- Step 7: Pour the batter into the prepared pan and then top with remaining butterscotch morsels.
- Step 8: Bake for 40 minutes and check for doneness. An inserted toothpick should be removed with a few crumbs on it, but not wet batter.
Notes
Use the fine side of the grater for the zucchini to ensure a smoother texture. Ensure butter and eggs are at room temperature for a more evenly textured batter.
- Prep Time: 10 minutes
- Cook Time: 40 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 bar
- Calories: 253 kcal
- Sugar: 22 g
- Sodium: 180 mg
- Fat: 12 g
- Saturated Fat: 7 g
- Unsaturated Fat: 5 g
- Trans Fat: 0 g
- Carbohydrates: 35 g
- Fiber: 1 g
- Protein: 3 g
- Cholesterol: 60 mg