Chocolate-Marmalade Crumb Cake Bars

• all-purpose flour↗1 cup
• all-purpose flour↗2 tablespoons
• sugar↗1⁄2 cup
• salt↗1⁄8 teaspoon
• chilled butter1⁄4 cup

  or 1/4 cup margarine, cut into small pieces

• english toffee-flavored candy bars1

  (1 1/2 ounce), chopped (such as Skor)

• baking powder↗1⁄2 teaspoon
• baking soda↗1⁄4 teaspoon
• plain fat-free yogurt↗1⁄2 cup
• nonfat milk↗1 tablespoon
• grated orange rind↗1 teaspoon
• vanilla extract↗1 teaspoon
• large egg whites↗2
• cooking spray
• orange marmalade↗1⁄4 cup

Step-by-step instructions

1. 1

   Preheat oven to 350°.

2. 2

   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.

3. 3

   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.

4. 4

   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.

5. 5

   Bake at 350° for 35 minutes or until a wooden pick inserted in center comes out clean. Cool in pan on a wire rack.