Bring a large pot with salted water to boil. Cook pasta according to package instructions. Rotini will take about 8-10 minutes for an al dente finish.
Shred carrots and chop green onions. Prep all your vegetables for the salad: wash, core and seed, and chop. If using broccoli, the salad will turn out better if the broccoli is steamed for 2-3 minutes.
Once the pasta is cooked, drain and cool until room temperature. You can just leave the pasta until it’s cooled, or to finish quicker, you can run some cold water over the pasta until it’s a good temperature.
Combine all ingredients in large bowl.
Whisk all ingredients together in small bowl or measuring cup. When salad has been combined, dress the salad and mix thoroughly. If desired, crumble some feta cheese over the top.