Lightly spoon the flour into dry measuring cups, and level with a knife.
Combine the flour, sugar, baking powder, salt, baking soda, and cardamom in a medium bowl. Make a well in the center of the mixture. Stir in the mango.
Whisk together milk, lemon juice, butter, vanilla, and egg. Add the egg mixture to the flour mixture, stirring just until moist (batter will be stiff).
Scoop batter into 12 muffin cups coated with cooking spray.
Bake at 400° F for 20 minutes or until the muffins spring back when touched lightly in the center.
Remove muffins from pans, and cool completely on a wire rack.