What is the best recipe for making delicious blueberry muffins with crumble topping?

To make delicious blueberry muffins with crumble topping, combine flour, sugar, baking powder, and salt. In a separate bowl, mix eggs, milk, and melted butter. Gently fold in blueberries. Fill muffin cups with batter and top with a mixture of flour, sugar, and butter for the crumble topping. Bake at 375F for 20-25 minutes until golden brown. Enjoy your tasty blueberry muffins!