Banana Marble Cake (Splenda)

I think this is from the Splenda web site, not sure. Wherever it came from, it is delicious!

• Ready In: 35 mins
• Serves: 12

Ingredients

• 1 1⁄2 cups all-purpose flour
• 3⁄4 cup  splenda granular sugar substitute
• 1 1⁄2 teaspoons baking powder
• 1  teaspoon baking soda
• 1⁄2 teaspoon salt
• 1⁄4 cup  softened margarine
• 2  eggs
• 1  cup  mashed banana (2 large)
• 1  teaspoon vanilla
• 3⁄4 cup yogurt, 2%

• MARBLE

• 2  tablespoons cocoa powder
• 1  tablespoon  splenda granular sugar substitute

Directions

1. Sift together flour, Splenda, baking powder, baking soda and salt.
2. In large mixing bowl beat margarine, eggs, banana and vanilla until smooth.
3. Blend in flour mixture alternating with yogurt, beating just enough to mix it.
4. Add cocoa and Splanda to 3/4 cup of batter for the MARBLE.
5. Pour plain batter to greased 9" square pan. Spoon chocolate on top. Draw knife through batter to create marbled effect.
6. Bake at 350 F for 35-40 minutes, until tester inserted in center cames out clean.