Thick fudgy blondies with chocolate chips for bake sales are the ultimate crowd‑pleaser – dense, chewy, and packed with melted chocolate in every bite. These blondies deliver a rich butterscotch flavor from brown sugar and a tender, fudge‑like texture that stays moist for days. Perfect for school fundraisers, church bazaars, or community events, they are easy to make in large batches and always sell out fast.
| Prep Time | Cook Time | Total Time | Servings | Difficulty | Cuisine |
|---|---|---|---|---|---|
| 15 minutes | 25‑30 minutes | 45 minutes | 24 blondies | Easy | American |
Why This Recipe Works
I developed this recipe after countless bake sale disasters – dry edges, sunken centers, and blondies that crumbled before they reached the table. The secret lies in the precise ratio of melted butter to brown sugar, which creates a dense, fudgy crumb without the need for chemical leaveners. The combination of light and dark brown sugars adds depth while a touch of cornstarch ensures a soft, bakery‑style chew.
Unlike many blondie recipes that turn cakey, this one uses an extra egg yolk and a higher fat content to mimic the texture of a thick chocolate chip cookie in bar form. The chocolate chips stay suspended evenly because you fold them into a warm, slightly thickened batter. Every batch turns out perfectly square‑cut, rich, and glossy – exactly what bake sale customers expect.
Ingredients
| Ingredient | Quantity | Notes & Alternatives |
|---|---|---|
| Unsalted butter | 1 cup (226 g) | Melted and cooled; substitute with vegan butter for dairy‑free |
| Light brown sugar | 1 cup (200 g) | Packed; dark brown sugar adds more molasses flavor |
| Dark brown sugar | ½ cup (100 g) | Packed; can use all light brown if preferred |
| Large eggs | 2 whole + 1 yolk | Room temperature; extra yolk adds richness |
| Vanilla extract | 2 teaspoons | Pure, not imitation |
| All‑purpose flour | 2 cups (240 g) | Measured by spoon‑and‑level; do not pack |
| Cornstarch | 2 teaspoons | Keeps blondies soft and tender |
| Baking powder | 1 teaspoon | Ensure it’s fresh for proper lift |
| Salt | ½ teaspoon | Fine sea salt preferred |
| Semi‑sweet chocolate chips | 1½ cups (270 g) | Dark or milk chocolate; chop a bar for irregular chunks |
Step-by-Step Instructions
Prepare the Batter
- Preheat the oven to 350°F (175°C). Line a 9×13‑inch metal baking pan with parchment paper, leaving overhang on long sides for easy lifting.
- Melt the butter in a medium saucepan over low heat. Remove from heat and let cool for 5 minutes.
- Whisk both brown sugars into the melted butter until no lumps remain. The mixture will look like wet sand.
- Add the whole eggs and egg yolk one at a time, whisking vigorously after each addition until the batter is smooth and glossy.
- Stir in the vanilla extract.
- In a separate bowl, whisk together the flour, cornstarch, baking powder, and salt.
- Gradually fold the dry ingredients into the wet mixture using a rubber spatula. Mix just until no streaks of flour remain – overmixing creates tough blondies.
- Fold in the chocolate chips, reserving a handful for the top. The batter will be thick and slightly sticky.
Bake to Perfection
- Spread the batter evenly into the prepared pan using an offset spatula. Press the reserved chocolate chips onto the surface.
- Bake on the middle rack for 25–30 minutes, rotating the pan halfway through. The edges should be golden and set, but the center will still jiggle slightly.
- Insert a toothpick into the center – if it comes out with a few moist crumbs (not wet batter), the blondies are done.
- Cool the pan completely on a wire rack for at least 2 hours before cutting. This step is critical for a clean slice and fudgy texture.
Chef Tips for Perfect Results
- Use an instant‑read thermometer to check doneness: the internal temperature should read 200–205°F (93–96°C). This guarantees a fudgy center without raw spots.
- Line the pan with parchment paper so you can lift the entire slab out for neat squares. Never use wax paper, which will melt.
- Chill the blondies for 10 minutes after cooling to room temperature before slicing. Use a long, sharp chef’s knife, wiping it clean between cuts for sharp edges.
- For extra chewiness, replace ¼ cup of the all‑purpose flour with bread flour. The higher protein content adds structure.
- If your butter browns slightly while melting (beurre noisette), you’ll get a deeper nutty flavor – a huge hit at bake sales.
- Always test your baking powder by dropping a spoonful into hot water; if it fizzes, it’s active. Flat powder results in dense, squat blondies.
Common Mistakes to Avoid
- Overbaking: Because the pan continues cooking after removal, baking until completely firm in the oven leads to dry blondies. Pull them when the center still wobbles slightly.
- Using cold eggs: Cold eggs seize the melted butter, creating a lumpy batter. Always bring eggs to room temperature by placing them in warm water for 5 minutes.
- Skipping the cornstarch: Without cornstarch, the blondies spread too much and become thin. It’s the key to that thick, bakery‑style height.
- Cutting while warm: Warm blondies crumble and stick. Let them cool completely – at least 2 hours – then refrigerate for 30 minutes before slicing for razor‑sharp pieces.
- Greasing the pan too heavily: Excess grease makes the edges fry and become greasy. A light butter coat or parchment is best.
Variations and Substitutions
| Ingredient | Substitution | Impact on Flavor & Texture |
|---|---|---|
| Semi‑sweet chocolate chips | White chocolate chips + dried cranberries | Sweeter, tangy, festive – perfect for holiday bake sales |
| All‑purpose flour | Gluten‑free 1‑to‑1 blend | Works well; add 1 tablespoon milk to prevent dryness |
| Butter | Coconut oil (solid form, not melted) | Coconut flavor; texture slightly firmer |
| Brown sugar | Coconut sugar | Less molasses, slightly grainier; reduce oven temp by 5°F |
| Eggs | Flax eggs (2 tbsp ground flax + 6 tbsp water per egg) | Paleo‑friendly; blondies will be slightly less rich |
Serving Suggestions and Pairings
Stack blondies on a tiered platter dusted with powdered sugar for bake sale tables. Offer them alongside mini cups of cold milk or dairy‑free almond milk for a nostalgic combo. For an upscale twist, dip each blondie halfway in melted dark chocolate and sprinkle with flaky sea salt. They also pair wonderfully with a scoop of vanilla bean ice cream – a great add‑on for school carnivals.
Storage and Reheating
| Method | Duration | Instructions |
|---|---|---|
| Room temperature | Up to 5 days | Store in an airtight container with a slice of bread to retain moisture. Replace bread every 2 days. |
| Refrigerator | Up to 1 week | Wrap tightly in plastic wrap; bring to room temperature before serving for softest texture. |
| Freezer | Up to 3 months | Wrap individual blondies in plastic, then foil. Thaw at room temperature for 30 minutes. |
| Reheat (single) | 10 seconds | Microwave on low power to restore fudgy interior without melting chips. |
Nutritional Information
| Nutrient | Amount per Serving |
|---|---|
| Calories | 298 |
| Protein | 3 g |
| Total Fat | 16 g |
| Carbohydrates | 36 g |
| Fiber | 1 g |
| Sugar | 24 g |
| Sodium | 105 mg |
Approximate values. One blondie based on 24 servings.
Frequently Asked Questions
Can I substitute whole‑wheat flour for all‑purpose flour in thick fudgy blondies?
Whole‑wheat flour replaces all‑purpose at a 1:1 ratio, but the blondies become denser and slightly nutty. For best results use white whole‑wheat flour and add 2 tablespoons extra butter to maintain moisture.
How do I know when fudgy blondies are done without a toothpick?
Use the jiggle test: the edges will be set and golden, but the center should wobble like Jell‑O when you gently shake the pan. The internal temperature reaches 200–205°F at the perfect point.
Why did my blondies turn out cakey instead of fudgy?
Cakey blondies come from overmixing the batter or overbaking. Stir the flour mixture only until combined and remove the pan from the oven while the center still looks underdone – carryover baking finishes the job.
Can I prepare the batter in advance and bake later?
Yes, the batter can be refrigerated for up to 24 hours. Let it come to room temperature for 20 minutes before spreading and baking – add 2–3 minutes to the bake time.
What is the best way to serve blondies at a bake sale?
Slice into uniform 2‑inch squares and display them upright in a clear bakery box. Tie a ribbon around the box and label each blondie with the price on a small flag – they sell faster when pre‑packaged.
Thick fudgy blondies with chocolate chips for bake sales deliver a dense, buttery richness that keeps customers coming back for seconds. By following the techniques outlined here – precise measuring, careful doneness checks, and patient cooling – you will produce consistent, high‑profit bars every time. The deep caramel notes from the brown sugar combined with pockets of melting chocolate make these blondies the star of any fundraising table. Bake a tray tonight and watch them disappear.
PrintThick Fudgy Blondies With Chocolate Chips For Bake Sales
Dense, chewy blondies bursting with melted chocolate chips, featuring a rich butterscotch flavor from brown sugar and a fudge-like texture. Perfect for bake sales with their moist, square-cut layers and crowd-pleasing sweetness.
- Prep Time: 15
- Cook Time: 30
- Total Time: 45
- Yield: 24 blondies
- Category: recipe index
- Method: Baking
- Cuisine: American
- Diet: Vegetarian
Ingredients
Unsalted butter, melted and cooled
Light brown sugar, packed
Dark brown sugar, packed
Large eggs (2 whole, 1 yolk)
Vanilla extract
All-purpose flour
Cornstarch
Baking powder
Salt
Semi-sweet chocolate chips
Instructions
Preheat oven to 350°F (180°C)
Line an 8×11-inch baking pan with parchment paper
In a bowl, whisk melted butter with brown sugars until fully combined
Whisk in eggs and vanilla until smooth
In a separate bowl, sift flour, cornstarch, baking powder, and salt
Add dry ingredients to butter mixture in three batches
Fold in chocolate chips just until incorporated
Spread batter evenly into prepared pan
Bake 25-30 minutes until edges are golden and a toothpick comes out with fudgy crumbs
Cool completely before slicing into 24 bars
Notes
Use parchment paper for easy release
Replace butter with vegan butter for dairy-free version
Dark or milk chocolate can be substituted
Chill leftover slices in an airtight container for up to 5 days
