Pop enough plain popcorn to make approximately 10 cups.

You can use an air popper or prepare the popcorn using your preferred stovetop method.

Transfer the popped popcorn to a large mixing bowl.

Carefully remove any unpopped kernels and discard them. This is important because hard kernels can be unpleasant or unsafe to bite into.

Allow the popcorn to cool slightly while preparing the marshmallow mixture.

Step 2: Melt the Butter

Place the unsalted butter in a large saucepan over low heat.

Allow it to melt completely, stirring gently to prevent browning.

Keep the heat low because the butter should melt gently without becoming overly hot.

Step 3: Add the Marshmallows

Add the mini marshmallows to the melted butter.

Stir continuously with a heatproof spatula until the marshmallows are completely melted and the mixture becomes smooth and glossy.

Remove the saucepan from the heat as soon as the marshmallows have melted.

Avoid overheating, as this can make the finished popcorn balls hard and difficult to shape.

Step 4: Add the Vanilla and Green Coloring

Stir the vanilla extract and salt into the melted marshmallow mixture.

Add the green gel food coloring a little at a time, mixing thoroughly after each addition.

Continue until the mixture reaches a bright, festive Grinch-green color.

Remember that the popcorn will slightly lighten the overall color, so a vibrant green mixture works best.

Step 5: Coat the Popcorn

Pour the warm green marshmallow mixture over the prepared popcorn.

Using a greased spatula, gently fold the popcorn until the pieces are evenly coated.

Work carefully to avoid crushing the popcorn.

Continue mixing until most of the popcorn is covered with the sticky green marshmallow mixture.

Step 6: Let the Mixture Cool Slightly

Allow the mixture to cool for approximately 3–5 minutes, just until it is comfortable enough to handle.

Lightly grease your hands with nonstick cooking spray or a little butter.

Do not allow the mixture to cool completely before shaping, as the marshmallow coating will become firmer and harder to work with.

Step 7: Shape the Popcorn Balls

Scoop approximately ¾ cup of the coated popcorn mixture for each ball.

Using lightly greased hands, gently press the mixture together to form a round shape.

Don’t squeeze too tightly. The goal is to create a ball that holds together while maintaining some of the popcorn’s airy texture.

Place each finished ball on a parchment-lined baking sheet.

Repeat with the remaining mixture to make approximately 12 popcorn balls.

Step 8: Add the Red Grinch Hearts

While the popcorn balls are still slightly sticky, gently press one red heart-shaped candy onto the front of each ball.

If the marshmallow coating has already started to firm, melt a little white chocolate according to the package instructions.

Allow it to cool slightly, then use a small dab to attach each red candy heart securely.

You can also add a few red and green sprinkles for extra Christmas decoration.

Step 9: Let the Popcorn Balls Set

Allow the popcorn balls to rest at room temperature for approximately 20–30 minutes, or until they hold their shape.

Once set, carefully transfer them to a serving platter or wrap them individually in food-safe clear bags.

Your adorable Grinch Popcorn Balls are ready to enjoy!