MIX flour, sugar, baking powder and salt in large bowl. Beat egg in small bowl; stir in milk and butter. Add to flour mixture; stir just until moistened. (Batter will be lumpy.) Stir in cereal and blueberries.
SPOON batter into greased or paper-lined muffin pan, filling each cup 2/3 full.
BAKE 20 minutes or until golden brown. Serve warm.
Chocolate Chunk Blueberry Muffins: For an extra indulgent muffin, add 1/4 cup semi-sweet or white chocolate chunks to the batter just before baking.
Citrus Blueberry Muffins: Add 1-1/2 teaspoons grated orange or lemon peel to the egg mixture before mixing with flour mixture.