Sprinkle gelatine over 1/2 cup of the half-and-half in medium saucepan.
Let stand 5 min. Stir in remaining 1 cup half-and-half, the granular sweetener and vanilla. Cook on low heat until gelatine is completely dissolved, stirring frequently. (Do not boil.)
Pour gelatine mixture into blender or food processor.
Add ricotta cheese; cover. Blend until pureed.
Pour evenly into eight 6-oz. custard cups or souffle dishes. Refrigerate 2 hours or until set.
Microwave jam in small microwaveable bowl on HIGH 15 sec. just before serving. Spoon 1/2 tsp. of the jam over each dessert. Store leftover desserts in refrigerator.