Babcia’s plum cake has been on my mind all week — the way she presses the fruit into the batter without fuss, the way the kitchen smells when the plums go jammy, the whole idea that some things are only good for a few weeks and you’d better pay attention. I don’t have blue plums yet, but I had bananas going soft on the counter and a pint of blueberries from the farmers market, and that felt close enough to the spirit of it. This brown sugar blueberry banana bread is the same honest instinct: use what’s ripe, don’t overthink it, and make something that tastes like right now.
Brown Sugar Blueberry Banana Bread with Blueberry Butter
Prep Time: 15 min | Cook Time: 60 min | Total Time: 1 hr 15 min | Servings: 10 slices
Ingredients
- 3 very ripe bananas, mashed (about 1 1/4 cups)
- 3/4 cup packed dark brown sugar
- 1/3 cup unsalted butter, melted and slightly cooled
- 2 large eggs
- 1 tsp pure vanilla extract
- 1/4 cup sour cream or plain whole-milk yogurt
- 1 1/2 cups all-purpose flour
- 1 tsp baking soda
- 1/2 tsp fine salt
- 1/2 tsp cinnamon
- 1 cup fresh blueberries, divided
- 1 tsp flour (for tossing blueberries)
Blueberry Butter
- 6 tbsp unsalted butter, softened to room temperature
- 3 tbsp fresh blueberries
- 1 tsp honey
- 1/4 tsp flaky sea salt
Instructions
- Preheat and prep. Heat oven to 350°F. Grease a 9x5-inch loaf pan and line with parchment, leaving overhang on the long sides for easy lifting.
- Mix the wet ingredients. In a large bowl, whisk together mashed bananas, brown sugar, and melted butter until combined. Add the eggs one at a time, whisking after each. Stir in vanilla and sour cream.
- Add the dry ingredients. Sprinkle in the flour, baking soda, salt, and cinnamon. Fold with a spatula until just combined — a few streaks of flour are fine. Do not overmix.
- Fold in the blueberries. Toss 3/4 cup of the blueberries with 1 tsp flour to coat (this keeps them from sinking). Fold gently into the batter. Pour into the prepared pan and scatter the remaining 1/4 cup blueberries over the top, pressing them in lightly.
- Bake. Bake for 55–65 minutes, until a toothpick inserted in the center comes out clean or with just a few moist crumbs. If the top browns too quickly, tent loosely with foil after 40 minutes. Cool in the pan for 15 minutes, then lift out and cool on a wire rack for at least 20 minutes before slicing.
- Make the blueberry butter. While the bread bakes, mash the blueberries with a fork in a small bowl until mostly smooth. Add softened butter, honey, and flaky salt. Mix until fully combined and streaked purple. Taste and adjust honey or salt. Refrigerate until ready to serve; bring back to room temperature before spreading.
- Serve. Slice thick and spread generously with blueberry butter. Best the day it’s baked, still warm enough that the butter softens on contact.
Nutrition (per serving)
Calories: 295 | Protein: 4g | Fat: 13g | Carbs: 42g | Fiber: 2g | Sodium: 230mg