Preheat oven to 350 ~ If using the Instant Pot, place trivet inside pot and add 1 to 2 cups of water to the bottom depending on the side pot you have
Grease and flour a 10-inch ramekin
With a fork (or hand mixer), whisk together flour, baking powder, salt and spices
In a separate bowl using a fork (or hand mixer), whisk together sugar, butter, yolk and vanilla until smooth
Slowly add the dry to the wet mixing thoroughly between additions
Add the milk and mix until smooth
Fold in the carrots and any additions
Bake in the over for 25-30 minutes
For Instant Pot ~ Cover the ramekin very tightly with a double layer of foil, making sure there are no holes where steam could sneak in. Place ramekin on trivet, lock lid and set to high pressure for 35 minutes, do a quick release when done
Pull cake, remove from ramekin and allow to cool completely
Frosting
Mix together cream cheese and butter until smooth
Add powdered sugar and vanilla and mix until smooth, cream, thoroughly combined
Spread on cake
For extra decor ~ Top with any carrot remnants you have from grating