0.3 cup stick margarine chilled cut into small pieces
0.5 cup sugar
1.4 ounce toffee candy bar english chopped (such as Heath or Skor)
1 teaspoon vanilla extract
Equipment
bowl
frying pan
oven
knife
wire rack
blender
cake form
measuring cup
Directions
Preheat oven to 35
Lightly spoon flour into dry measuring cups, and level with a knife.
Combine flour, sugar, and salt in a bowl; cut in butter with a pastry blender or 2 knives until mixture resembles coarse meal.
Combine 1/3 cup flour mixture and candy bar for topping; set aside.
Stir baking powder and baking soda into remaining flour mixture in bowl; add yogurt, milk, rind, vanilla, and egg whites. Beat at medium speed of a mixer until blended. Spoon batter into an 8-inch round cake pan coated with cooking spray. Drop marmalade by teaspoonfuls onto batter; swirl together using the tip of a knife.
Sprinkle topping over batter.
Bake at 350 for 35 minutes or until a wooden pick inserted in center comes out clean. Cool in pan on a wire rack.