Fudgy Rum Cranberry & Nut Brownies (Easy & Moist Recipe)

Brownies are a classic American chocolate treat.

While rich chocolate cakes can sometimes feel a bit heavy or monolithic, this recipe creates a delightful balance by combining toasted walnuts, sliced almonds, and tart cranberries for a wonderfully layered texture.

What Makes This Recipe Special?

A Touch of Warm Milk: Adding warmed milk directly to the chocolate and butter speeds up the melting process over the double boiler. It also helps keep the baked batter smooth, preventing the brownies from turning too stiff or dry.
Adult Flavor Profile: Soaking the dried cranberries in rum adds a subtle, sophisticated aroma that complements the deep cocoa flavor without being overwhelming.
Textural Variety: The crunch of roasted walnuts and crisp almond slices works in harmony with the chewy, rum-infused berries, making every bite interesting.

Brownie vs. Gateau Chocolat

People often confuse brownies with Gateau Chocolat. While Gateau Chocolat is traditionally baked in a round pan and uses whipped meringue for lightness, brownies are baked in a square pan and use whole eggs, making them much simpler to prepare.

Originally created to be enjoyed by hand without a fork or knife, brownies are wonderful for everyday afternoon tea or casual hospitality. Pair a square with a hot cup of black coffee for the best experience.

Be sure to check out our Gateau Chocolat recipe as well: [Link to Gateau Chocolat Recipe]

Ingredients (For a 15 cm / 6-inch square pan)

Dark/Chocolate: 100 g
Unsalted butter: 70 g
Sugar: 45 g
Eggs (beaten): 90 g
Cake flour: 70 g
Cocoa powder: 15 g
Milk: 30 g
Rum: 15 ml
Dried cranberries: 20 g
Walnuts: 25 g
Sliced almonds: 8 g

Chocolate Brownie Recipe

Prep Work

Preheat oven: Preheat your oven to 170°C (338°F).
Eggs: Cold eggs can hinder the cake from rising properly. Take the eggs out of the refrigerator a few hours in advance. If short on time, submerge them in warm water for about 1 minute.
Sift dry ingredients: Sift together the cake flour and cocoa powder.
Soak fruit: Soak the dried cranberries in the rum.
Warm milk: Heat the milk in the microwave for 20 seconds.

Instructions

Place the chocolate, unsalted butter, and warmed milk into a heatproof bowl. Set the bowl over a pot/container of hot water (double boiler method) to melt the mixture completely.
Once the chocolate and butter are fully melted, add the sugar and mix thoroughly.
Gradually add the beaten eggs in two additions, mixing well after each addition.
Fold in the sifted cake flour and cocoa powder using a rubber spatula, gently scooping from the bottom until just combined.
Fold in the walnuts and rum-soaked cranberries. (Toasting the walnuts in the oven for a few minutes beforehand enhances their flavor.)
Pour the batter into the prepared square baking pan and scatter the sliced almonds evenly over the top.
Place the pan on the middle rack of the oven and bake for 25 minutes.
Allow the brownie to cool completely before removing it from the pan.

Fudgy Rum Cranberry & Nut Brownies (Easy & Moist Recipe)

Nutritional Information

Whole Batch (15 cm / 6-inch Square Pan)

Nutrient	Per Batch
Calories	1,940 kcal
Protein	31.5 g
Total Fat	130.2 g
Total Carbohydrates	156.8 g
└ Sugars / Net Carbs	144.5 g
└ Dietary Fiber	12.3 g
Sodium (Salt Equivalent)	0.3 g

Per Serving (By Cut Size)

9 Portions (3 × 3 Squares)
- Calories: approx. 216 kcal
- Protein: 3.5 g
- Fat: 14.5 g
- Carbohydrates: 17.4 g (Net Carbs: 16.1 g)

Pan Sizes, Capacities, and Batter/Ingredient Guidelines

Category	Pan Type	Dimensions (cm)	Capacity	Cake w/o Baking Powder	Cake w/ Baking Powder	Sponge Cake (Eggs)
Loaf Pan (Pound)	Large	21.5 × 8.7 × 6.0	1122	Ingredients: ~550g / 2 Eggs	Ingredients: ~500g / 2 Eggs	—
	Slim	21.2 × 6.7 × 5.9	838	Ingredients: ~400g / 1.5 Eggs	Ingredients: ~300g / 1.5 Eggs	—
Square Pan	15 cm (6″)	16.1 × 16.1 × 4.8	1244	Ingredients: ~500g / 2 Eggs	Ingredients: ~400g / 2 Eggs	—
	21 cm (8″)	21.2 × 21.2 × 5.0	2247	Ingredients: ~900g / 3.6 Eggs	Ingredients: ~720g / 3.6 Eggs	—
Round Cake Pan	15 cm (5-inch)	Radius 7.5 × 7.5 × Height 6 ×3.14	1060	—	—	2 Eggs
	21 cm (7-inch)	Radius 10.5 × 10.5 × Height 6 × 3.14	2077	—	—	4 Eggs
Muffin Pan	Large (6 cavities)	Base 4.1 × Height 3 × Top 7	444	—	Batter: 350–500g	—

Pan Size Conversion Multipliers

Loaf Pans (Pound Cake Pans)

Conversion Pattern	Multiplier
Large Loaf Pan → Slim Loaf Pan	× 0.75
Slim Loaf Pan → Large Loaf Pan	× 1.34

Round Cake Pans

Conversion Pattern	Multiplier
15 cm → 18 cm	× 1.5
18 cm → 15 cm	× 0.6
15 cm → 21 cm	× 2.0

Additional Note (Muffin Pan)

You can substitute a Large Loaf Pan for a Muffin Pan; however, if the total batter weight is under 400g, it is recommended to scale up the ingredients by 1.2 to 1.3 times.

Read the Japanese version of this article here! [しっとり濃厚！ラム香るクランベリーとナッツの本格ブラウニーレシピ]　　

naokoan

Hi, I’m Naoko! I am a licensed Registered Dietitian in Japan, currently working in a hospital setting. My daily mission is to provide nutritious, healing meals to patients, ensuring that every dish supports their health and brings a smile to their face. My recipes are more than just cooking guides—they are built on scientific nutritional balance and clinical experience. Why I provide ingredients in grams (g): You might notice that all my recipes use precise gram measurements. This is because, as a dietitian, I believe that accuracy is the key to true health management. Whether you are tracking calories, managing salt intake, or simply want to recreate the exact flavor of a professional hospital kitchen, these measurements ensure your success and well-being. My Specialty: I specialize in high-pressure cooking and oven recipes that save time without sacrificing nutrition. My goal is to introduce the world to “Real Japanese Home Cooking”—dishes that are simple, budget-friendly, and body-friendly. I’m thrilled to share the wisdom of Japanese nutrition with you. Let’s cook our way to a healthier life!