1Heat oven to 375ºF. In 9-inch round cake pan or 8-inch square pan, mix marmalade, almonds, butter and corn syrup.
2In medium bowl, mix flour, sugar, orange peel, baking powder and salt. Stir in just enough half-and-half so dough leaves side of bowl and forms a ball. Drop dough by 12 spoonfuls onto marmalade mixture; flatten slightly.
3Bake 30 to 35 minutes or until golden brown. Immediately place heatproof serving plate upside down onto pan; turn plate and pan over. Let pan remain about 1 minute so marmalade mixture can drizzle over coffee cake. Serve warm or cool.