Heat oven to 375°F. In small bowl, mix crust ingredients. Press firmly in bottom of ungreased 8-inch springform pan. Bake 8 to 10 minutes. Cool completely, about 30 minutes.
In large bowl, beat sweetened condensed milk, lemon juice and liqueur with electric mixer on medium speed until smooth. Add raspberries; beat on low speed until well blended. Fold in whipped cream and red food color. Pour over crust. Freeze at least 2 hours or until firm.
Just before serving, let stand at room temperature about 15 minutes. Garnish with sweetened whipped cream and chocolate hearts. Store dessert in freezer.