Blueberry Cinnamon Roll Loaf with Brown Butter Icing
Ingredients
Dough
4½ teaspoons fast-acting dry yeast
¼ cup warm water
½ cup granulated sugar
½ cup butter, softened
1 large egg
1 teaspoon salt
1 cup milk
4 cups all-purpose flour, plus additional flour if needed
Blueberry Cinnamon Filling
1½ cups blueberries, fresh or frozen
⅓ cup granulated sugar
1 tablespoon fresh lemon juice
1 teaspoon ground cinnamon
1 tablespoon cornstarch
1 tablespoon water
Brown Butter Vanilla Icing
¼ cup brown butter
1½ cups powdered sugar
2 tablespoons milk, plus additional as needed
1 teaspoon vanilla extract
Pinch of sea salt
Instructions
1. Activate the Yeast
Add the warm water and yeast to a small bowl and gently stir.
Let the mixture sit for approximately 10 minutes, until the yeast looks foamy and active.
The water should be warm rather than hot. Water that is too hot can damage the yeast.
2. Make the Dough
While the yeast activates, add the sugar, softened butter, egg, milk, and salt to a large mixing bowl.
Mix with an electric mixer until well combined.
Add the activated yeast mixture and mix again until incorporated.
3. Add the Flour
Gradually add the flour, mixing as you go.
Once you've incorporated all 4 cups, continue mixing for another few minutes until a soft dough forms.
The dough should be slightly tacky but manageable.
If it is still too wet to form into a ball, add additional flour ¼ cup at a time, being careful not to add more than necessary.
4. First Rise
Form the dough into a ball and leave it in the bowl.
Cover with a clean kitchen towel or plastic wrap and place it in a warm area of your kitchen.
Allow the dough to rise for approximately 1½–2 hours, or until roughly doubled in size.
5. Make the Blueberry Cinnamon Filling
While the dough rises, add the blueberries, sugar, lemon juice, and cinnamon to a medium saucepan.
Cook over medium heat, stirring occasionally, until the blueberries begin to soften and release their juices.
Gently crush some of the berries with the back of your spoon while leaving some texture in the filling.
In a small bowl, whisk together the cornstarch and water until completely smooth.
Pour the cornstarch mixture into the blueberries and stir continuously for another 1–2 minutes, until the filling becomes thick and spreadable.
Remove from the heat, transfer to a bowl, and refrigerate until completely cooled.
6. Roll Out the Dough
Once the dough has doubled in size, lightly flour your work surface and use a rolling pin to roll the dough into a large rectangle approximately ¼ inch thick.
7. Add the Blueberry Filling
Spread the cooled blueberry cinnamon filling evenly over the dough.
Leave approximately ½ inch around the edges to make rolling easier and help prevent the filling from spilling out.
8. Roll the Loaf
Starting along one of the long sides, tightly roll the dough into a long log.
Gently pinch the seam to help seal it.
9. Cut and Twist
Using a sharp knife, carefully cut the log lengthwise down the center, creating two long pieces and exposing the blueberry layers inside.
Turn the pieces so the cut sides face upward.
Gently twist the two pieces around one another, trying to keep the exposed blueberry layers facing upward as much as possible.
Tuck both ends underneath the loaf.
Transfer the shaped loaf to a baking sheet lined with parchment paper.