Measure out fresh strawberries and prepare them by hulled and halved for easy blending.
Place the strawberries, basil leaves, balsamic vinegar, honey, and ice cubes into the blender jar.
Secure the lid on the blender and begin blending on high speed. Blend for about 30-45 seconds until the mixture looks slushy and smooth, with no large ice chunks remaining.
Pause to check the texture — it should be icy yet scoopable, with a vibrant pink-red color and tiny flecks of basil throughout.
Taste the mixture and adjust sweetness if desired by adding a bit more honey; briefly pulse again to incorporate.
Pour the slushie into glasses, allowing the icy mixture to fill each container generously.
Finish by garnishing with a fresh basil leaf or a small strawberry for an appealing presentation.
Serve immediately with a straw or spoon for a refreshing, textured summer treat.