Miso Caramel Brown Butter Blondies – Easy 35-Minute Dessert

This recipe combines the nutty depth of brown butter with the savory umami of white miso, creating a blondie that's anything but basic. The miso caramel swirl adds a glossy, salty-sweet ribbon that cuts through the buttery richness.

I developed these blondies to hit three specific targets: a crisp, crackly top; a dense, fudgy center; and a caramel that stays gooey even after cooling. The proportions below are tested to deliver that texture every time, using standard supermarket ingredients.

About the Ingredients

1 cup (226g) unsalted butter

Use high-fat butter for better browning. Substitute with vegan butter for dairy-free, but ensure it has at least 80% fat.

1 cup (200g) packed light brown sugar

Light brown sugar adds moisture and caramel notes. Dark brown sugar will deepen the flavor but make the bars slightly more dense.

1/2 cup (100g) granulated sugar

Regular white sugar helps with the crackly top. You can use all brown sugar, but the texture will be softer.

2 large eggs, room temperature

Room-temperature eggs emulsify better. If cold, place them in warm water for 5 minutes.

1 teaspoon vanilla extract

Pure vanilla is best. Substitute with 1/2 teaspoon almond extract for a nutty twist.

1 1/2 cups (190g) all-purpose flour

Measure by weight for accuracy. Use a gluten-free 1:1 blend if needed, but the texture may be slightly crumblier.

1/2 teaspoon baking powder

Ensure it's fresh for proper rise. If expired, the blondies will be dense.

1/2 teaspoon salt

Use kosher salt. If using table salt, reduce to 1/4 teaspoon.

2 tablespoons white miso paste

White miso is mild and sweet. Red miso is stronger, use 1 tablespoon and adjust to taste.

1/2 cup (100g) caramel sauce, store-bought or homemade

Use a thick, not runny, caramel. If homemade, make sure it's cooled slightly. For a quick substitute, melt 10 soft caramels with 2 tablespoons cream.

1/2 teaspoon flaky sea salt (like Maldon), for topping

Flaky salt is essential for the salty-sweet contrast. If you don't have it, use coarse kosher salt, but crush it slightly.

Tips & Tricks

Don't overmix the batter

Mix until just combined to avoid tough blondies. Overmixing develops gluten, which makes them cakey.

Caramel swirl

If the caramel is too runny, it will sink to the bottom. Chill the caramel for 10 minutes before swirling, and only do a few gentle folds.

Check doneness early

Start checking at 25 minutes. The edges should be golden and the center just set – a toothpick inserted should come out with a few moist crumbs, not wet batter.

Cool completely before cutting

The bars are very soft when warm. Let them cool in the pan for at least 30 minutes, then refrigerate for 15 minutes for clean slices.

Step-by-Step Instructions

1. Brown the Butter

Melt butter in a medium saucepan over medium heat. Continue cooking, swirling occasionally, until the butter turns golden brown and smells nutty, about 8 minutes. Remove from heat and let cool for 10 minutes.

2. Mix Sugars and Eggs

In a large bowl, whisk the brown sugar, granulated sugar, and eggs until smooth. Add the vanilla and browned butter, then whisk vigorously until fully combined and glossy, about 1 minute.

3. Add Dry Ingredients

Sprinkle the flour, baking powder, and salt over the wet mixture. Gently fold with a spatula until just combined. Do not overmix.

4. Incorporate Miso

Add the miso paste to the batter and fold until evenly distributed. The batter should be thick and slightly tacky.

5. Prepare Pan

Line an 8×8-inch baking pan with parchment paper, leaving overhang on two sides. Pour the batter into the pan and spread evenly.

6. Swirl Caramel

Drizzle the caramel sauce over the batter in a zigzag pattern. Use a knife to gently swirl it into the batter, creating a marbled effect. Do not overdo it.

7. Bake

Bake at 350°F (175°C) for 25-30 minutes, until the edges are golden brown and the center just set. A toothpick inserted 1 inch from the edge should come out clean, but the center will be slightly soft.

8. Cool and Slice

Let cool in the pan for 20 minutes, then transfer to a wire rack using the parchment overhang. Cool completely before slicing into 9 squares. Sprinkle with flaky sea salt just before serving.

Delicious Variations

• Add 1/2 cup toasted walnuts or pecans for extra crunch.
• Substitute the caramel with dulce de leche for a deeper, more intense caramel flavor.
• For a chocolate twist, fold in 1/2 cup dark chocolate chips along with the miso.

How to Store Miso Caramel Brown Butter Blondies

Frequently Asked Questions

Try this recipe and let me know how it turns out in the comments below. For more no-nonsense baking tips, subscribe to my newsletter.

Miso Caramel Brown Butter Blondies

Miso Caramel Brown Butter Blondies are chewy, salty-sweet bars with a rich caramel swirl, ready in under an hour.

★★★★½ 4.8 (187 ratings)

15 minPrep time35 minCook time9Servings420 kcalCalories

Print RecipePin Recipe

🧂 Ingredients

• 1 cup (226g) unsalted butter
• 1 cup (200g) packed light brown sugar
• 1/2 cup (100g) granulated sugar
• 2 large eggs, room temperature
• 1 teaspoon vanilla extract
• 1 1/2 cups (190g) all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon salt
• 2 tablespoons white miso paste
• 1/2 cup (100g) caramel sauce, store-bought or homemade
• 1/2 teaspoon flaky sea salt (like Maldon), for topping

📋 Instructions

1. 1Brown the Butter — Melt butter in a medium saucepan over medium heat. Continue cooking, swirling occasionally, until the butter turns golden brown and smells nutty, about 8 minutes. Remove from heat and let cool for 10 minutes.
2. 2Mix Sugars and Eggs — In a large bowl, whisk the brown sugar, granulated sugar, and eggs until smooth. Add the vanilla and browned butter, then whisk vigorously until fully combined and glossy, about 1 minute.
3. 3Add Dry Ingredients — Sprinkle the flour, baking powder, and salt over the wet mixture. Gently fold with a spatula until just combined. Do not overmix.
4. 4Incorporate Miso — Add the miso paste to the batter and fold until evenly distributed. The batter should be thick and slightly tacky.
5. 5Prepare Pan — Line an 8×8-inch baking pan with parchment paper, leaving overhang on two sides. Pour the batter into the pan and spread evenly.
6. 6Swirl Caramel — Drizzle the caramel sauce over the batter in a zigzag pattern. Use a knife to gently swirl it into the batter, creating a marbled effect. Do not overdo it.
7. 7Bake — Bake at 350°F (175°C) for 25-30 minutes, until the edges are golden brown and the center just set. A toothpick inserted 1 inch from the edge should come out clean, but the center will be slightly soft.
8. 8Cool and Slice — Let cool in the pan for 20 minutes, then transfer to a wire rack using the parchment overhang. Cool completely before slicing into 9 squares. Sprinkle with flaky sea salt just before serving.

👨‍🍳 Chef's Note: For the best flavor, use high-quality white miso and a thick caramel sauce. The flaky sea salt is not optional – it makes the salty-sweet contrast pop.

Servings: 9

Cuisine: American

Course: Dessert

Nutrition (per serving): 420 kcal · 5g protein · 58g carbs · 19g fat

Written by Lucas Okafor
Lucas covers personal finance and side hustles, with an emphasis on building income streams without hype. He breaks down money concepts into straightforward, no-nonsense advice.