01 -
Preheat oven to 375°F (190°C) and line a muffin pan with 12 jumbo liners to facilitate easy removal and minimize sticking.
02 -
In a large mixing bowl, use an electric mixer to blend eggs, vegetable oil, milk, water, and vanilla extract until the mixture is smooth and uniform.
03 -
Add Greek yogurt to the wet mixture and mix thoroughly until fully incorporated for extra moisture.
04 -
Using a spatula or wooden spoon, gently fold white cake mix and instant vanilla pudding mix into the wet ingredients. Mix until just combined and avoid overworking the batter.
05 -
Gently fold 1 cup semisweet chocolate chips, 1 cup white chocolate chips, and 1 tablespoon Christmas sprinkles into the batter for even distribution.
06 -
Divide the batter evenly among the prepared muffin liners. Top each with the remaining 1/2 cup semisweet chocolate chips, 1/2 cup white chocolate chips, and additional Christmas sprinkles.
07 -
Place the pan in the preheated oven and bake for 20 to 25 minutes, or until a toothpick inserted in the center emerges clean and the muffin tops are golden and set.
08 -
Let the muffins cool in the pan for 10 minutes before transferring to a wire rack. Serve warm or at room temperature.