Preheat oven to 350 degrees and line a muffin tin with paper liners.
> In a mixing bowl, whisk together the flour, baking powder, baking soda and salt; set aside. In another large bowl, whisk together the eggs and sugar until well combined, then whisk in the oil, Orange Puree and peanut butter. Fold the dry ingredients into the wet and mix until flour is just moistened (don't over-mix or the muffins will be dense).
> Scoop about two tablespoons of batter into the large muffin cups until half full. Place a heaping teaspoon of jam in the center of each muffin. Cover the jam with another 2 tablespoons or so of batter, filling the cups just over the top. If you're using mini muffin cups, scale back quantities to fit into the smaller sized cups.
> Bake for 25 to 30 minutes, until the tops are golden brown.