Premier White Lemony Cheesecake

Ingredients

• 1 recipe crust
• 6 tablaspoons buter or margarine,,softened
• 1/4 cap granulated sugar
• 11/4 cup all - purpose flour
• 1 large egg yolk
• 1/8 teaspoon salt
• 1 recipe cheesecake
• 6 bars (two 6 oz. boxes) nestle toll house premier white baking bars, broken into pieces
• 1/2 cup heavy whipping cream
• 2 packages (8 oz each) cream cheese, softened
• 1 tablespoon lemon juice
• 2 teaspoons grated lemon peel
• 1/4 teaspoon salt
• 3 large egg whites