Heat oven to 400 degrees. Lightly grease and flour muffin cups or line with paper liners.
In a big bowl combine yogurt, milk, granulated sugar, 1/4 cup brown sugar, melted butter, and egg. In separate bowl stir together flour, baking powder, salt and baking soda. Combine the mixtures, stirring only until dry ingredients are moistened.
Gently fold in berries. Spoon into muffin cups.
In a small bowl combine the topping ingredients with a fork until crumbly. Top muffins with crumb topping.