1 bag of icing sugar (add as required, see instructions below)
Instructions
Coarsely grate the carrot in advance (about two extra large carrots).
Combine all ingredients in order using a wooden spoon (the batter becomes thick and needs a sturdy spoon).
Grease and flour a 9x13" pan or two 9" round tins (if you cut waxed paper rounds to fit in the bottom also butter and dust with flour over the waxed paper and around the sides).
Bake at 350F for 50-60 minutes until a toothpick inserted comes out clean.
To Make the Frosting:
Meanwhile whip the cream cheese until smooth. Add the vanilla and butter and whip to blend. Slowly add icing sugar until the icing becomes stiff enough to hold its shape. If making a layer cake you will need more frosting. Just keep adding splashes of milk alternating with more icing sugar until you have enough frosting to ice between the layers and around the cake. Just ensure you stop when the icing is stiff enough to hold it's shape.
Recipe by Just a Smidgen at https://justasmidgen.com/2021/04/05/the-best-carrot-cake-recipe-ever/