Preheat oven to 350°F (180°C).
In a large mixing bowl using an electric mixer whip together the butter and sugar until light and fluffy.
½ cup butter, 1 cup sugar
Whip in the eggs, vanilla extract, yogurt and milk.
2 eggs, 2 teaspoons vanilla extract, ½ cup Greek yogurt, ¼ cup milk
In another bowl whisk together the flour, baking soda, baking powder, salt.
1 ½ cups all-purpose flour, 1 teaspoon baking powder, ½ teaspoon baking soda, ½ teaspoon salt
Mix the dry ingredients into the wet.
Separate the batter evenly. To one portion of batter add the cocoa powder and red food coloring.
2 tablespoons cocoa powder, 2 teaspoons red food coloring
Alternate the batters into a parchment lined loaf pan. Using a butter knife swirl the batters together.
Bake for 30-45 minutes or until a toothpick inserted comes out clean. Set aside to cool completely.
Make the icing. Whisk together the powdered sugar, heavy whipping cream and vanilla extract. Pour the icing over the loaf.
2 cups powdered sugar, ⅓ cup heavy whipping cream, 1 teaspoon vanilla extract
Remove from pan and slice to serve!