Step 1

Preheat oven to 350° F. Line the bottom of a loaf pan with parchment paper and set aside.

Step 2

In a medium bowl, sift together flour, powdered peanut butter, baking powder and salt. Whisk to combine.

Step 3

In another large bowl, whisk together yogurt, eggs, stevia, creamy peanut butter, milk, oil and vanilla until combined. Add flour mixture to bowl with yogurt mixture and mix with a rubber spatula until just combined.

Step 4

Pour half of batter into prepared loaf pan and smooth out into an even layer. Using a teaspoon, drop 4-5 dollops of strawberry spread on top of batter, using about half of the spread. Take a butter knife and swirl it through the jam 3 to 4 times, creating swirls of jam in the batter. Pour the remaining batter into the pan and repeat the swirling process with the remainder of the jam.

Step 5

Bake cake in preheated oven for 45-55 minutes until a skewer inserted into the center comes out clean with no wet batter. Allow cake to cool in pan for 10 minutes then remove to a wire rack to cool completely.