These are mindbogglingly delicious!

4 oz champagne (substitute Martinelli’s sparkling cider for non-drinkers)
4 oz orange juice
Generous splash vanilla syrup (such as Torani)
Generous splash half-and-half

Stir together in a tall glass and fill with ice. Garnish with a thin slice of orange.

Alternative recipe: Raspberry mimosa
Substitute raspberry syrup for the vanilla and garnish with raspberries.