Traditional blueberry muffins, just a little lighter. They are healthier (less fat, less sugar, and additional whole grains) but they definitely don't taste like your typical 'healthier version'. These muffins have a nice moist and cakey crumb, studded with lots of blueberries and just a hint of lemon. Applesauce is substituted for some of the oil in the muffins, cutting fat without changing the texture. The applesauce also acts as a natural sweetener, which allows for cutting down on added granular sugar without changing the taste. Whole wheat flour is combined with all-purpose flour, so the muffins are not overwhelmingly whole-grain.
SWEET SCIENCE: Magical applesauce
With certain baked goods like muffins, some cakey cookies, and cakes, you can easily substitute 1 cup of applesauce (or similar fruit purees*) for 1/4 cup of the butter or oil in your recipe. Reduce the sugar by 1-2 tablespoons depending on the sweetness of the puree, and reduce the liquid by 1/4 of a cup. This substitution is hardly noticeable in taste, but cuts a significant amount of fat and calories.
How does it work? Normally the fat in butter or oil helps keep the baked goods moist and tender because the fat surrounds starch granules and protects them from gluten development, locking in moisture. When you substitute some of the fat with a fruit puree, the pectin in the fruit or vegetables does essentially the same thing, making it possible to cut back on the fat in a recipe without sacrificing moisture.
*other fruit or vegetable purees include: banana, pumpkin, carrots, and sweet potatoes.