Preheat the oven to 425°F. (you will reduce the temperature to 350°F after 5 minutes). Coat a 12-cavity standard muffin with oil spray or line with cupcake papers.
Dice the candied ginger slices and set aside.
Peel, core and dice or chop the apples, add them to a bowl and set aside.
Whisk together in a medium size bowl, the flour, baking powder, baking soda, salt, cinnamon and ground ginger, set aside.
In a large bowl, using an electric mixer or a whisk, beat together the brown sugar, butter, oil, eggs, sour cream and vanilla until well blended.
Add the dry ingredients, the reserved apples and diced ginger to the wet mixture. Using a wide spatula, gently fold the mixture together, scraping the bottom and sides. Mix only until the batter is combined, do not over-mix.
Fill the muffin cavities completely full, transfer to the oven and bake at the 425°F temperature for 5 minutes only; then reduce the oven to 350°F and bake for an additional 12 to 15 minutes or until a toothpick inserted into the center comes out clean.
Remove the muffins from the oven and let cool in the pan for 5 minutes, then gently remove them from the pan and place on a wire cooling rack. Cool completely before adding the glaze.
For the Glaze:
In a small microwaveable dish, stir the powdered sugar, ground ginger and the cream together. It will be a thick paste-like mixture. Transfer to the microwave and heat for 15 seconds or until the mixture has become a thick syrup.
Using a fork, drizzle the syrupy glaze over the tops of the muffins. Allow the glaze to set before serving.
Notes
Candied ginger: Many grocery stores carry it in cubes, slices, or diced pieces.Sour cream substitute: Full-fat Greek yogurt can be used in place of sour cream.Mix gently: Fold wet and dry ingredients together just until combined. Over-mixing will make the muffins tough.High-heat start: Baking at 425°F for the first 5 minutes gives the muffins a quick rise and tall tops. Don’t forget to lower the oven to 350°F after that.