
Blue Velvet Layer Cake with Natural Blue Food Color (Water-Soluble Extract)
Dolce Flav
16
25 minutes
30 minutes
Natural Blue Food Color Water Soluble
This moist Blue Velvet Layer Cake is an eye-catching twist on classic velvet cakes — light cocoa notes, tender crumb, and a vibrant natural blue color using Natural Blue Food Color — Water Soluble Extract. The cake batter is mixed simply (dry ingredients, wet ingredients, then color), baked in two 8-inch pans, cooled, then frosted with tangy cream-cheese buttercream. Use a few extra drops of the water-soluble extract to reach deep blue shades; gentle fold technique keeps the crumb tender and even. (Adapted and optimized from popular blue-velvet methods.)
Ingredients
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2⅔ cups (340 g) cake flour (or all-purpose + 2 tbsp cornstarch)
2 tsp baking powder
½ tsp baking soda
½ tsp fine salt
2 tbsp (12 g) unsweetened cocoa powder (gives classic velvet hint)
1½ cups (300 g) granulated sugar
¾ cup (170 g) unsalted butter, room temperature
3 large eggs, room temperature
1 cup (240 ml) buttermilk, room temperature
2 tsp vanilla extract
1 tbsp white vinegar (or 1 tbsp lemon juice)
Natural Blue Food Color — Water Soluble Extract — start with 20–30 drops
Optional: 1 tbsp vegetable oil (for extra moisture)
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8 oz (225 g) cream cheese, cold
½ cup (115 g) unsalted butter, room temperature
3–4 cups (360–480 g) powdered sugar, sifted (adjust to taste/consistency)
1 tsp vanilla extract
Pinch of salt
Directions
Prep the oven & pans
Preheat oven to 350°F (175°C). Grease and line two 8-inch cake pans; dust lightly with flour or use parchment rounds for easy release.
Whisk dry ingredients
In a medium bowl, sift (or whisk) together cake flour, cocoa powder, baking powder, baking soda, and salt. Set aside.
Cream butter and sugar
In a large bowl, cream the room-temperature butter and granulated sugar with a mixer on medium speed until light and fluffy (about 3–4 minutes). Scrape down sides.
Add eggs & flavor
Add eggs one at a time, mixing well after each. Mix in vanilla extract and optional oil.
Alternate dry & buttermilk
With mixer on low, add the dry ingredients in three additions alternating with buttermilk (dry → buttermilk → dry → buttermilk → dry). Mix just until combined — do not overmix.
Add vinegar & natural blue extract
Stir in the vinegar. Add Natural Blue Food Color — Water Soluble Extract in increments: start with 20–30 drops (about 1–1½ tsp) and stir to assess color; add additional drops 5 at a time for deeper blue. The color may deepen slightly while baking. (If using a liquid extract, remember it's water-soluble and will thin batter less than gel.)
Bake
Divide batter evenly between prepared pans. Smooth tops and bake at 350°F (175°C) for 25–30 minutes or until a toothpick inserted into the center comes out clean. Rotate pans halfway if your oven bakes unevenly.
Cool completely
Let cakes cool in pans 10 minutes, then remove to a wire rack to cool completely before frosting (avoid frosting warm cake to prevent melting).
Make cream cheese buttercream
With a mixer, beat cold cream cheese and room-temp butter until smooth. Gradually add sifted powdered sugar until you reach desired sweetness and pipeable consistency. Add vanilla and a pinch of salt; beat until silky.
Assemble & decorate
Level cake layers if needed. Place bottom layer on cake board, spread a thick, even layer of buttercream, top with second layer and crumb-coat. Chill 20–30 minutes, then apply final coat and smooth. Optionally decorate with blue sprinkles, edible pearls, or a lightly blue-tinted piping accent