From the Cook
From the Cook
From the Cook
From the Cook
1/5
Instructions
1
Preheat the oven to 350°F (177°C) and line a sheet pan with parchment paper. Set aside.
2
Combine the cooled, melted butter and granulated sugar in a medium mixing bowl. Whisk until the mixture is thick and lightened in color, 1-2 minutes. Whisk in the egg yolk and artificial vanilla extract until smooth.
3
Add the flour, cornstarch, baking soda, and Kosher salt to the wet ingredients. Use a rubber spatula to fold the cookie dough until it's about 90% combined. Then, add the rainbow sprinkles and mix the dough just until there are no more streaks of flour. Don't over-mix! The dough will be a little soft.
4
Using a #20 cookie scoop (3 Tablespoons), scoop the cookie dough into 6 balls. Carefully roll the cookie dough balls in extra rainbow sprinkles for decoration. Place the cookie dough balls 2-3 inches apart on the prepared sheet pan.
5
Bake the cookies for 8-9 minutes, until the edges are set and the centers are still a bit under-done. Let the cookies cool on the sheet pan for about 5 minutes. Then, transfer them to a wire rack to cool completely and enjoy!
My Calorie Intake
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Tips & Tricks (5)
- Artificial Vanilla Extract is the Secret Weapon 🎯Use artificial vanilla extract instead of pure vanilla to achieve that authentic funfetti cake flavor—it contains vanillin compounds that mimic cake mix perfectly and shouldn't be skipped or substituted.
- Cornstarch Creates the Tender Crumb 🌾The cornstarch replaces some all-purpose flour to reduce gluten development, giving these cookies a softer, cake-like texture rather than a chewy one—don't reduce this ingredient or your cookies will become tough.
- Toast Your Sprinkles Before Adding 🌈Lightly toast rainbow sprinkles in a 300°F oven for 2-3 minutes before folding into the dough to intensify their color and prevent them from bleeding into the batter during baking.
- Use Room Temperature Egg Yolk for Better Emulsification 🥚Allow your egg yolk to sit at room temperature for 15 minutes before adding to the creamed butter and sugar—this helps it emulsify properly and create a more cohesive dough with better structure.
- Slightly Underbake for Optimal Texture ⏱️Remove cookies from the oven when the edges are just set but the centers still look slightly underdone—they'll continue cooking on the pan and finish with a tender, cake-like center rather than becoming dry.
Recipe Facts
Diet at a Glance
Vegetarian
My Calorie Intake
Smart Nutrition 
Nutrition Per Serving
Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Glycemic Analysis
Glycemic Index
Glycemic Load
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