1/2cupwhole wheat flouroptional - or replace with an additional 1/2 cup all-purpose flour
1/3cupgranulated sugar
1Tablespoonbaking powder
1teaspoonbaking soda
1/4teaspoonsalt
1 cupbuttermilksee note
3/4cuppeanut butter
Instructions
Prepare an 8.5x4.5" (1 pound) loaf pan by greasing it generously. Set aside. Turn the oven on to 350°F.
Whisk together 1 1/4 cups all-purpose flour, 1/2 cup whole wheat flour, 1/3 cup granulated sugar, 1 Tablespoon baking powder, 1 teaspoon baking soda, and 1/4 teaspoon salt in a medium bowl. Set aside.
In a smaller bowl or large measuring cup, whisk together 1 cup buttermilk and 3/4 cup peanut butter. The mixture will be thick.
Stir the buttermilk mixture into the flour mixture (the batter will be very thick and dough-like). If you have a hard time stirring it, knead it with your hands until it's evenly mixed. Transfer the dough/batter to the prepared loaf pan, spreading it evenly into the pan.
Bake the loaf for 50-55 minutes, until the top is golden brown and a toothpick inserted into the center comes out with a few crumbs clinging to it. Let the loaf cool on a wire rack in the pan for 10 minutes before removing from the pan to cool completely on the wire rack before slicing.
The slices are best served warm (they can be reheated in the microwave or toaster) with butter, honey, or jam. Store leftovers in an airtight container or zipper bag at room temperature for 2 days, or in the freezer for a longer period.
Notes
If you don't have buttermilk, you can also use dried buttermilk, or plain regular (not Greek) yogurt, or half milk, half Greek yogurt, or soured milk (1 Tablespoon of lemon juice or vinegar, and enough milk to add up to 1 cup, total).To make this recipe dairy-free and/or vegan, replace the buttermilk with your favorite soured dairy-free milk or dairy-free yogurt.