Press wonton wrappers into a muffin tin. Brush melted butter lightly in the bottom of each wonton cup.

Bake at 350° for 7 minutes, or until lightly golden brown; set aside

Combine mascarpone cheese and Nestle Carnation Sweetened Condensed Milk with an electric mixer. Fold whipped topping into the mixture until combined.

Place filling into a frosting bag or 1 gallon Ziploc bag. Cut tip or one of the corners about 1/2 inch up. Squeeze mixture into each tartlet and top with strawberries and blueberries.