Christmas Sheet Cake (Print Version)

# Ingredients:

01 - 2 3/4 cups all-purpose flour.
02 - 2 teaspoons baking powder.
03 - 1/4 teaspoon baking soda.
04 - 1/2 teaspoon kosher salt.
05 - 2 cups granulated sugar.
06 - 3 large eggs, room temperature.
07 - 1 cup vegetable oil.
08 - 2 teaspoons vanilla extract.
09 - 1 cup buttermilk, room temperature.
10 - 1/2 cup red, green, and white holiday sprinkles.
11 - 1 1/2 cups salted butter (3 sticks), room temperature.
12 - 1 1/2 pounds powdered sugar (6 cups).
13 - 1/4 cup milk.
14 - 1 tablespoon vanilla extract.
15 - Forest green gel food coloring.
16 - Blue gel food coloring (optional).
17 - 5 brown mini candy-coated chocolates.
18 - 2 tablespoons holiday sprinkles.
19 - 30 yellow mini candy-coated chocolates.
20 - 40 red mini candy-coated chocolates.
21 - 1 (6-in.) piece red sour candy belt.

# Instructions:

01 - Preheat oven to 350°F. Spray 18x13-inch half-sheet pan with baking spray.
02 - Whisk flour, baking powder, baking soda, and salt.
03 - Whisk sugar and eggs until foamy, add oil and vanilla. Alternate adding flour mixture and buttermilk. Fold in sprinkles.
04 - Pour into pan, bake 20 minutes until golden. Cool completely, at least 1 hour.
05 - Beat butter until fluffy, gradually add powdered sugar, milk, and vanilla. Beat until light.
06 - Spread base frosting, create tree design with green frosting, add candy decorations following detailed pattern.

# Notes:

01 - Cake can be frozen unfrosted up to 3 months.
02 - Frosted cake keeps 3 days at room temperature or 1 week refrigerated.
03 - Measure tree outline carefully for centered placement.