First, prepare the pancake batter according to the box (or recipe) instructions.
Next, distribute the batter across 6 mid-size mixing bowls.**
Set the griddle to the heat slightly above the 'keep warm' setting.
Next, transfer red batter into a liquid measuring cup, and then into a squeeze bottle. (Note: it's easiest to fill the squeeze bottle using a liquid measuring cup because it has a spout.)
Then, hold the squeeze bottle at a 90-degree angel over the griddle and apply a light pressure to release the batter.
Create a 2-inch circle with the batter.
Repeat with remaining red batter, or until you use up all the space on your griddle.
Flip the mini pancakes once you see air bubbles across the majority of the mini pancake (as pictured above).
Cook for another 2-3 minutes.
Remove pancakes from heat and finish cooking remaining rainbow pancakes.