01 -
Prepare rotini pasta according to the package instructions until al dente. Drain using a colander.
02 -
Add red food coloring mixed with water into one Ziploc bag and blue food coloring mixed with water into another bag.
03 -
Divide the cooked pasta into three equal portions. Place one-third into the red bag, one-third into the blue bag, and leave the remaining portion plain. Seal the bags and gently knead until the pasta is evenly colored.
04 -
Toss the uncolored pasta with olive oil to prevent it from absorbing dye from the other portions.
05 -
In a large mixing bowl, combine all portions of pasta, cherry tomatoes, mozzarella cheese, pepperoni slices, black olives, and Italian dressing. Mix until evenly combined.
06 -
Cover the bowl with plastic wrap and refrigerate for at least one hour before serving. Garnish with fresh parsley.