These homemade blueberry muffins with a streusel crumb topping are the best. They’re light, fluffy, and bursting with sweet ...

Here is how to make these sourdough discard blueberry muffins with oat streusel topping. Step 1: Preheat oven. Preheat the oven to 425°F and line a standard 12-cup muffin tin with paper liners.