Whipped Feta and Scallion Dip

Name: Whipped Feta and Scallion Dip
Ingredients: 8 ounces creamy French feta cheese; 1/2 cup mayonnaise; 4 ounces cream cheese, softened; 2 tablespoons toasted sesame seeds; 2 teaspoons chopped fresh oregano; 1/4 teaspoon red pepper flakes; 1 large clove garlic, grated; 1/2 cup finely grated Parmesan; 1 tablespoon red wine vinegar; 8 scallions, green and white parts both, minced, plus additional for garnish; Kosher salt, if needed; Seedy crackers, for serving; Sliced carrots and cucumbers, for serving