Step 1: Gather all ingredients and ensure they are measured and ready.

Step 2: Add 2 cups white rum, 1 cup heavy cream, 1 cup whole milk, 3/4 cup powdered sugar, 2 teaspoons vanilla extract, 1 teaspoon cinnamon, and 1/2 teaspoon nutmeg to a blender.

Step 3: Blend the mixture on high speed for about 30 seconds until smooth.

Step 4: Taste the Rum Chata and add more powdered sugar if a sweeter flavor is desired, then blend for another 10 seconds to incorporate.

Step 5: Transfer the blended mixture to a pitcher and refrigerate for at least 30 minutes to allow flavors to meld.

Step 6: Pour the chilled Rum Chata into individual glasses, serving over ice if desired.

Step 7: Optionally garnish with a sprinkle of cinnamon or nutmeg on top.

Step 8: Serve immediately and enjoy your homemade creamy Rum Chata with friends.