Instructions: Line side of greased 10-inch springform pan with parchment paper just to rim. Set aside

Streusel Topping: In bowl, stir together flour, sugar, nutmeg and cinnamon.

Using pastry blender or 2 knives, cut in butter until crumbly. Set aside.

Cake: In large bowl, beat butter until fluffy; gradually beat in sugar until light and fluffy. Beat in eggs, orange juice and vanilla.

In separate bowl, stir together flour, orange rind, baking powder and nutmeg; gradually beat into egg mixture until smooth and thick. Scrape into prepared pan. Nestle plums into batter, skin side up.

Filling: In mixing bowl, beat together sour cream, egg, orange juice and cornstarch; pour over plums. Sprinkle with Streusel Topping.

Bake in 350F 180C oven for 60-70 minutes or until topping is golden brown and tester inserted into centre comes out clean. Let cool.

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