Starbucks Snickerdoodle Hot Cocoa

From Nicole Iizuka, POPSUGAR Food

Cinnamon dolce syrup:
1 cup water
1/2 cup granulated sugar
1/2 cup brown sugar
1/2 tablespoon ground cinnamon
1/2 teaspoon vanilla extract

Snickerdoodle hot cocoa:
1 cup whole milk
2 tablespoons white chocolate sauce
1 tablespoon cinnamon dolce syrup
Whipped cream
1 tablespoon granulated sugar plus 1 teaspoon cinnamon, mixed together

To make cinnamon dolce syrup: In a pot over medium heat, add water, sugar, brown sugar, cinnamon, and vanilla extract. Bring mixture to a boil, then lower to a simmer for 10 minutes or until sugar is melted completely and has developed a syrup consistency. Pour into a jar and let cool.
To make snickerdoodle hot cocoa: Add milk to a mason jar with a lid. Cover with lid and shake vigorously for 30-45 seconds. Remove the lid and microwave for 1 minute, or until the milk is hot. Add white chocolate sauce and cinnamon dolce syrup, and stir until incorporated. Pour into a mug and garnish with whipped cream and cinnamon sugar.