Step 1

In a non-stick saucepan, add milk, flour, granulated sugar and cook on medium heat, while constantly whisking everything together.

Step 2

When the flour mixture starts to thicken, remove from heat and pour it into a bowl.

Step 3

Cover the bowl with saran wrap quickly, making sure it's directly touching the surface to prevent any "skin" formation.

Step 4

Place this bowl in the fridge and let it cool down completely until it has the consistency of a pudding.

Step 5

In a mixing bowl, cream together butter and shortening.

Step 6

Add the flour mixture and vanilla extract, while constantly mixing.

Step 7

Add powdered sugar (1/4 cup at a time) and continue mixing, until you have the desired consistency and flavor. This step is optional

Step 8

Use this frosting to pipe your cakes/cupcakes and enjoy!