An easy homemade blueberry streusel muffin recipe bursting with blueberries and a hint of orange, topped with sweet crumbly brown sugar streusel topping.
1. Prepare pans and oven. Position a rack in the center of the oven and preheat to 400 degrees F. Brush the insides of the muffin pan with softened butter and then brush the top of the pan. Or use liners for easier removal, like I did). You can also use cooking spray. In a small bowl, prepare the streusel by using your fingers until combined and crumbly. Set aside.
2. Make the streusel. In a small bowl, stir together the flour, cinnamon, and sugars. Stir int the melted butter, until combined and crumbly. Set aside.