Measure out two cups of frozen pineapple chunks and place them into your blender.
Juice a lime, aiming for about two tablespoons, and pour the fresh lime juice over the pineapple in the blender.
Add the mint leaves to the blender, spreading them evenly among the other ingredients.
Secure the lid on the blender and blend on high speed until the mixture is smooth and slushy, about 30-45 seconds. You should see a vibrant, icy texture with tiny specks of mint.
Stop the blender and taste the slushie. Adjust by adding a splash of water or more lime juice if you prefer it tangier.
Pour the vibrant, icy slushie into glasses. Garnish with extra mint leaves if desired for a fresh, aromatic finishing touch.
Serve immediately with a straw or spoon and enjoy the refreshing, tropical flavors.