Preheat the oven to 375℉/190℃. Line your muffin tin with 14 muffin liners and set aside.
In a medium-sized bowl, add in flour, oats, salt, cornstarch, cinnamon, nutmeg, ginger, cloves, baking powder, and baking soda. Using a spatula, mix until just completely combined.
1 1/2 cups all-purpose flour, 1 1/4 cup rolled oats, 2 tsps cornstarch, 1 tsp baking soda, 1 1/2 tsps baking powder, 1 1/2 tsps cinnamon, 1/8 tsp cloves, 1/8 tsp ginger, 1/8 tsp nutmeg
Using the fine side of your grater, grate the carrots.
1 1/3 cup carrots
In a large bowl add shredded carrots, unsweetened applesauce, eggs, vanilla, brown sugar, and oil. Whisk until combined.
2/3 cups oil, 1 cup unsweetened applesauce, 1 egg, 1 egg yolk, 1 cup light brown sugar, 1 tsp vanilla
Add the dry into the wet and using a spatula, gently mix until just combined. Don't over-mix!
Scoop the muffins evenly between 14 regular liners. This recipe makes 13-15 muffins depending on how full you fill each liner. Sprinkle a handful of streusel on top of each muffin.
Bake the muffins for 20-25 minutes in regular liners or until a toothpick inserted comes out clean.
The muffins stay good on your counter for up to 3 days and in the fridge in an airtight container for up to a week.