Spread 1 teaspoon of butter over each slice of bread and place 2 slices, butter-side down, in the pan. Top each slice with 1 tablespoon Prego®+ Plant Protein sauce and layer with cheese, 6 slices pepperoni, basil, and oregano. Spread an additional tablespoon of Prego®+ Plant Protein sauce on the unbuttered side of the remaining slices of bread, and top each sandwich, butter-side out.