Bring a large pot of salted water to a boil. Trim the ends of the beans, then add them to the pot and boil until bright green and crisp tender, about 3 to 4 minutes. Fill a bowl with ice water. Once the beans are bright green, immediately remove them from the pot and place them in the ice water bath until cooled.
Cut the corn from the cobs. Slice the cherry tomatoes in half.
To serve, place washed and dried salad greens on a plate or in a bowl. Top with beans, tomatoes, corn, and pepitas, and drizzle with the desired quantity of sesame buttermilk dressing. (Extra dressing will be left over for future salads. Note that this dressing has a thin consistency, not creamy.)