Can I make this ahead of time?

Yes. You can bake the layers the day before and wrap them tightly. Assemble and frost on the day of serving for the freshest look. If fully frosted, keep in the fridge and bring to room temperature before serving.

What if my cake sinks in the middle?

Sinking often means the center was underbaked or the leavener was uneven. Check your oven temperature with an oven thermometer and be sure to test with a toothpick before removing. Also avoid opening the oven door too often while baking.

Can I use a different size pan?

You can, but baking time will change. A 9-inch pan will make a slightly thinner layer and bake faster. Reduce time and watch for the visual cues: edges set and center springs back.

How do I keep the buttercream from sliding?

Make sure the cake layers are cool. If your kitchen is warm, chill the frosted cake briefly between coats to set the buttercream. A thin crumb coat chilled for 15 minutes gives a clean final layer.

Can I make this dairy-free?

Yes. Use a dairy-free butter and a plant-based milk. Choose a yogurt substitute that is mildly tangy to mimic sour cream. Texture will be slightly different, but the method stays the same.

Max & Ruby Birthday Cake 2026 - Easy Fresh Recipes

Name: Max & Ruby Birthday Cake
Prep time: 15 min
Cook time: 28 min
Total time: 1 h
Cuisine: American
Ingredients: 2 3/4 cups (340 g) all-purpose flour; 2 1/2 teaspoons baking powder; 1/2 teaspoon fine salt; 1 cup (226 g) unsalted butter, softened to room temperature; 1 3/4 cups (350 g) granulated sugar; 3 large eggs, room temperature; 2 teaspoons pure vanilla extract; 1 cup (240 ml) whole milk, warmed slightly; 1/4 cup (60 ml) sour cream or plain yogurt; 1/3 cup (60 g) rainbow sprinkles, plus extra for topping; For buttercream: 1 cup (226 g) unsalted butter, softened; 3-4 cups (360–480 g) powdered sugar; 2-3 tablespoons milk or cream; a pinch of salt; 1 teaspoon vanilla

Description

A simple and reliable birthday cake recipe that invites ease, color, and celebration, perfect for small gatherings or everyday treats.

Ingredients

Scale

2 3/4 cups (340 g) all-purpose flour
2 1/2 teaspoons baking powder
1/2 teaspoon fine salt
1 cup (226 g) unsalted butter, softened to room temperature
1 3/4 cups (350 g) granulated sugar
3 large eggs, room temperature
2 teaspoons pure vanilla extract
1 cup (240 ml) whole milk, warmed slightly
1/4 cup (60 ml) sour cream or plain yogurt
1/3 cup (60 g) rainbow sprinkles, plus extra for topping
For buttercream: 1 cup (226 g) unsalted butter, softened; 3-4 cups (360–480 g) powdered sugar; 2-3 tablespoons milk or cream; a pinch of salt; 1 teaspoon vanilla

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Instructions

Preheat the oven to 350°F (175°C) and prepare two 8-inch round pans by greasing and lining them with parchment.
In a large bowl, whisk together flour, baking powder, and salt. Set aside.
In another bowl, cream together softened butter and sugar until light and pale.
Add eggs one at a time, beating briefly after each addition, and stir in vanilla.
Alternate adding dry ingredients and milk, mixing only until combined, then fold in sprinkles.
Divide batter evenly between pans and smooth the tops.
Bake for 22 to 28 minutes until edges are set and a toothpick comes out with moist crumbs.
Let cakes cool in pans for 10 to 12 minutes, then transfer to a wire rack to cool completely.
For buttercream, beat softened butter until smooth, gradually adding powdered sugar, vanilla, and milk.
Assemble by frosting between the layers and over the top and sides of the cake, decorating with extra sprinkles.

Notes

Choose butter for classic flavor or oil for moisture; use sour cream or yogurt based on what you have. Avoid overmixing to prevent sprinkles bleeding.

Nutrition

Serving Size: 1 slice
Calories: 350
Sugar: 28g
Sodium: 300mg
Fat: 18g
Saturated Fat: 11g
Unsaturated Fat: 5g
Trans Fat: 0g
Carbohydrates: 45g
Fiber: 1g
Protein: 4g
Cholesterol: 80mg