Preheat oven to 400 degrees and grease a muffin tin.
In a large mixing bowl combine 1 tbsp of ground flaxseed and 3 tbsp of water and let set for 5-10 minutes
Shred the sweet potato and carrot and use a towel to drain some of the liquid and press down. Add to the mixing bowl.
Add in the applesauce and stir to combine.
Add in all the dry ingredients and stir. The batter will be thick and so you may have to use your hands.
Evenly spoon the batter in 6 muffin tins for big muffins or 8 for smaller muffins. Top each muffin with about 1 tsp peanut butter and swirl on the top.
Place in the oven to bake for 10 minutes. Then drop the oven temperature to 350 and cook for another 10-15 minutes until muffins are set in the middle.
Let cool for 10 minutes and ready to serve.
Store in a air tight container for up to 4 days or in the freezer for up to 3 months
Notes
Nutrition facts calculated for 10 servings and 2 tbsp peanut butter