New Blueberry muffin 新ブルーベリーマフィン

Although we generally like home delivery of groceries, the quality of produce can be a bit unreliable. Since it was high-season for blueberries, we ordered some and several batches arrived in good shape and were delicious. But the last time, the blueberries that arrived had a hard life. Many were smashed or extremely soft. We had to discard about 1/3 of them and even the ones we saved were bit too soft to eat as whole fresh fruit on yogurt for example. So, my wife just heated them up in a sauce pan (no water or sugar, just gently cooked) until they were the consistence of soft jam. The next morning, I pureed them using an immersion blender. The blueberry puree was pretty good. We added a teaspoon of it to our morning yogurt. Somehow the blueberry taste intensified in the puree and actually tasted richer than the whole blueberries we had been adding. My wife, then expanded the blueberry repertoire by making this new version of blueberry muffin using both whole and pureed blueberry. The blueberry puree made the muffin really good with strong blueberry flavor. The puree was added to the top of the muffin. The cut surface looks like only a few whole blueberries were added to but the distribution was somewhat uneven. Other sections of the muffins had plenty of whole blueberries. This is based on the recipe called “America’s test kitchen’s best blueberry muffins”.

Ingredients
1 cup of whole blueberries (or optional substitute toasted pecans).  

1 cup of blueberry puree.
2 ½ cups all-purpose flour
2 ½ teaspoons baking powder
1 teaspoon kosher salt
1 cup granulated sugar

2 eggs room temperature

4 tablespoons unsalted butter melted and cooled slightly
¼ cup vegetable  oil
1 cup buttermilk room temperature
1 ½ teaspoons vanilla extract 

(Optional) finely grated zest of 1 lemon. We did not use this.

Directions:
To make the blueberry puree, bring 1 cup of blueberries to a very low simmer in a small saucepan. Cook until the berries have broken down. Puree. Cool to room temperature.

Whisk the dry ingredients (flour through salt) in a large bowl. Whisk 1 cup sugar and eggs in medium bowl until thick and homogeneous. Slowly whisk in the butter and oil until combined. Whisk in buttermilk, lemon zest (if using) and vanilla until combined. Fold wet mixture and remaining berries into flour mixture until just moistened (lumpy is fine). If the batter seems loose, let it mellow for 5 minutes, and it will thicken up.

Divide among 12 greased muffin cups (batter should completely fill cups). Spoon 1 teaspoon of the blueberry puree into the center of each mound. (First picture below) Gently swirl into the batter using a toothpick and a figure-eight motion.

Bake at 425F until tops are golden and just firm, 17 to 19 minutes. (Second picture below). Cool in muffin tins for 5 minutes, then transfer to a wire rack and cool 5 minutes before serving.

These were really good muffins with a very intense blueberry flavor thanks to the addition of the puree. The texture of the muffin was very tender with a nice fine crumb and faint vanilla flavor. The delivery of the smashed batch of blueberries was a “blessing-in-disguise” now that we have learned about blueberry blueberry puree and it’s flavor advantages. 

Addendum:
My wife was impressed by how the blueberry puree added a good blueberry flavor to the muffins. We had some left over puree but no whole blueberries left. So my wife decided to substitute toasted pecans for the whole blueberries. (Toasted pecans as a substitute for whole blueberries is not a substitute I would have made or let alone even thought of ) but this really worked. The picture below shows the result. It’a almost like two muffins in one. The top is blueberry muffin and the underneath is pecan muffin. And the blueberries and pecans really work well together. The pecans add a nice crunchy textural element.