It's quite unusual cake: no oil, no butter. And result is quite delicious with peanut butter or jam. It stays fresh for a long time. Next time I will make this cake, I will make with glaze, but instead of 1 tablespoon of lemon juice, I will use 1 teaspoon.  The recipe was published without a swirl mixture. I decided to enhance with something sweat. Believe me, it's really good.

Lemon Yogurt cake

1 cup whole-wheat pastry flour
1 cup all-purpose flour
1 teaspoon baking soda
1 teaspoon baking powder
1/4 teaspoon salt
2 eggs
1/2 cup honey
1 cup Greek yogurt
Zest and juice of 2 large lemons

Swirl mixture
2 tablespoons cocoa powder
1 tablespoons sugar
1 teaspoon ground cinnamon
1 teaspoon ground ginger

Preheat oven to 350F. Oil an 8x8-inch baking dish (I took standard 5x10 non-stick loaf pan)
Whish dry ingridients together in a medium bowl (Instead of whole-wheat flour, I used only all-purpose flour). In a separate bowl whisk together eggs, honey, yogurt, lemon zest, and lemon juice. Add wet ingredients to dry ingredients and fold gently until combined.

In a small bowl, mix together all of the ingredients for swirl mixture.

Spoon half the batter into the prepared load pan, and spread it into an even layer with an offset spatula. Sift sworl mixture over the batter to evenly coat. Spoon the rest of the batter into pan. Bake for 40 minutes, or until a toothpick or cake teste inserted into center comes out clean.

Glaze (optional)

1 Tablespoon fresh lemon juice
1/4 cup powdered sugar

To make the glaze, whisk together 1 tablespoon lemon juice with powdered sugar. Pour evenly over cake while it's still warm.

Let cook completely before slicing.