A homemade muffin is the best answer to an easy breakfast while heading to the office. However, even a good blueberry muffin often faces a problem when the fruit sinks to the bottom and bursts, gluing itself to the paper lining or pan.
One trick to solving this dilemma is holding off on mixing the fruit in your muffin batter. Instead, drop a bit of the plain batter to each muffin cavity to create a thin layer. You can then gently fold in your mix-ins to the remaining batter. Proceed with placing the mixed batter over the plain batter, dividing evenly as needed. Continue to bake as normal.
The layer of plain batter at the bottom will prevent the berries from sinking to the bottom of the pan and bursting. This method works with lined or unlined pans, making clean-up a breeze. It’ll also work with other berry mix-ins, dried fruit or even chocolate chips.
Source: the Kitchn