Put a metal bowl and metal beaters in the refrigerator to chill for at least 15 minutes.
Melt marshmallows and coffee together in top of a double boiler over simmering water, stirring frequently and scraping down the sides with a rubber spatula to avoid scorching. Stir banana and vanilla extract into marshmallow mixture; set aside to cool.
Pour cream into the chilled bowl and beat using electric mixer with cold beaters on high speed until stiff peaks form. Gently fold whipped cream into marshmallow mixture until well incorporated. Spoon or pipe mixture into small dessert dishes; garnish with chocolate shavings. Refrigerate until chilled, at least 30 minutes.
This is excellent served as a mini-dessert in shooter glasses that you see at so many restaurants today. You may not have room for a big dessert, but always have room for a few spoonfuls after a nice dinner. And you'll have less guilt over a small indulgence!
Per Serving: 208 calories;11.7 g fat;
26.5 g carbohydrates;
1.4 g protein;
41 mg cholesterol;
34 mg sodium.