Coffee walnut loaf cake brings toasted nuts and coffee flavor into a tender butter cake. A simple coffee buttercream tops the cooled loaf, with walnut halves for a crisp finishing touch.
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Recipe at a Glance
- Yield: 10 slices
- Preparation: 25 minutes
- Cooking: 50 minutes
- Resting and chilling: Cool completely before frosting
Table of Contents
Ingredients
Cake
| Ingredient and amount |
|---|
| 170 g unsalted butter, softened |
| 170 g light brown sugar |
| 3 large eggs |
| 170 g all-purpose flour |
| 2 teaspoons baking powder |
| 1/4 teaspoon salt |
| 2 tablespoons instant coffee dissolved in 2 tablespoons hot water, cooled |
| 60 ml milk |
| 80 g chopped walnuts |
Frosting
| Ingredient and amount |
|---|
| 80 g unsalted butter, softened |
| 160 g powdered sugar |
| 1 teaspoon instant coffee dissolved in 2 teaspoons hot water, cooled |
| 10 walnut halves |
Before You Start
Cool dissolved coffee before adding it to buttercream so it does not melt the butter.
Directions
1. Prepare
Heat oven to 175°C (350°F). Line a 23 x 13 cm loaf pan. Toast chopped walnuts on a tray for 6–8 minutes and cool.
2. Mix
Beat butter and brown sugar until fluffy. Add eggs one at a time. Whisk flour, baking powder and salt separately, then fold into the batter alternating with cooled coffee and milk. Fold in walnuts.
3. Bake
Spread into pan. Bake 45–55 minutes until a skewer inserted in the center comes out without wet batter. Tent with foil if browning early.
4. Cool
Cool in pan 15 minutes, then lift onto a rack and cool completely.
5. Frost
Beat frosting butter smooth, gradually add powdered sugar and cooled coffee. Spread over the cold loaf and add walnut halves.
Cook’s Tips
- Cool dissolved coffee before adding it to buttercream so it does not melt the butter.
- Measure ingredients before starting and use the stated pan size. Cooking times are a guide; follow the texture and doneness cues in the method.
Storage
Keep covered in a cool place for up to 2 days or refrigerate up to 4 days. Bring slices to room temperature before serving. Freeze unfrosted loaf for up to 1 month.
Frequently Asked Questions
Can I omit walnuts?
Yes, leave them out without replacing them.
Can I use brewed coffee?
Concentrated instant coffee supplies flavor without adding too much liquid. Ordinary brewed coffee is not a direct volume-for-volume substitute.