Cooked Vanilla Frosting (and my favorite chocolate cake) PRINT
- PREP TIME: 15 min
- COOK TIME: 30 min
This is a classic recipe for a vanilla frosting that is made with (of all things) a roux of cooked milk and flour. When added to whipped butter and granulated sugar, the frosting whips up to resemble a silky whipped cream frosting. It’s one of the best cake icings I’ve ever made, and it couldn’t be easier! I’ve decided to include the recipe for my favorite extra-moist chocolate cake. Together, this makes an impressive cake that will disappear fast!
|For the cake:|
|1-¾||cup all-purpose flour (I use King Arthur Flour unbleached flour)|
|¾||cups unsweetened cocoa|
|2||tsp baking soda|
|1||tsp baking powder|
|1||cup black coffee, cooled (I used a dark roast coffee. You can't taste the coffee, but the chocolate is deeper in flavor and richness with this ingredient|
|1||cup buttermilk (or 1 Tbsp lemon juice with milk to equal 1 cup; or 1 Tbsp vinegar with milk to equal 1 cup)|
|½||cup canola oil|
|1||tsp vanilla extract|
|For the cooked vanilla frosting:|
|5||Tbsp unbleached all-purpose flour (I use King Arthur brand)|
|1||cup unsalted butter|
|1||cup granulated sugar|
|NOTE: I doubled these ingredients to be sure I had enough to frost a cake.|
For the cake:
Prepare 2 9-inch cake pans (I always line mine with parchment paper and then use a non-stick baking spray with flour.
Preheat the oven to 350F.
Combine flour, sugar, cocoa, baking soda, baking powder, & salt in a large bowl or in bowl of stand mixer.
Add eggs, coffee, buttermilk, oil, & vanilla.
Beat at medium speed for 2 minutes. (Batter will be thin.)
Divide evenly into cake pans (this cake makes a great sheet cake or cupcakes).
Bake for 20 minutes (for cupcakes) or 27 minutes (approx) for a baking pan at 350°F or until toothpick comes out clean.
Cool completely and frost.
FOR THE FROSTING:
Whisk together in a saucepan the flour and milk.
Cook over medium heat until starting to thicken and cook for a minute or two more— don’t let it get too thick or it will be too stiff when it cools. (The roux has to boil for a little bit for the flour to cook and lose its starchy flavor.)
Pour into a wide bowl and allow to cool, stirring now and again. If the roux is lumpy when it cools, just press it through a fine sieve.
Beat together a cup of unsalted butter and a cup of granulated sugar until light (you really need an electric hand mixer or stand mixer for this).
Beat in the cooled roux about two tablespoons at a time. As you beat and add the roux, the frosting turns creamy (6-8 minutes) instead of grainy from the sugar — almost like “magic”!
Add 1-2 tsp vanilla and beat some more until it’s light and creamy.
TIP: Don’t chill the roux in the fridge or it will be too hard to beat stuff into.