01 -
Place marshmallows in the freezer for at least 30 minutes to keep them firm during frying.
02 -
Line a large rimmed baking sheet with paper towels and a wire rack. Set aside.
03 -
Add enough canola oil to a large heavy-duty pot to fill it 3-4 inches deep, or to the fill line of an electric deep fryer. Heat the oil to 375°F. If using a pot on the stove, attach a candy thermometer to monitor the oil's temperature, ensuring it remains between 365°F and 375°F.
04 -
In a small bowl, whisk together whole milk, egg, and vanilla extract until fully combined.
05 -
In a large bowl, add the buttermilk pancake mix and create a well in the center. Pour the milk mixture into the well and gently whisk just until combined. Leave the batter slightly lumpy to prevent it from becoming tough. The batter should be thicker than traditional pancake batter.
06 -
Add 4-5 frozen marshmallows to the batter, ensuring they are completely coated on all sides.
07 -
Carefully drop the coated marshmallows into the hot oil. Fry each for 25-30 seconds per side (approximately 1 minute per batch) or until lightly golden brown. Use a slotted spoon to flip and lift the marshmallows if needed.
08 -
Using a large slotted spoon, transfer the fried marshmallows to the prepared baking sheet to drain excess oil.
09 -
Serve the deep-fried marshmallows on a large plate. Optionally, dust with powdered sugar and top with whipped cream, chocolate sauce, or rainbow sprinkles as desired.