Old-Fashioned Banana Pudding - Miz En Place

Ingredients

• 1/2 cup sugar
• 2 tbsp cornstarch
• 1 tsp salt
• 2-1/4 cups whole milk
• 4 large eggs, separated
• 2 tbsp unsalted butter
• 1 tsp vanilla extract
• 3-1/3 cups vanilla wafers
• 4 ripe bananas, cut into 1/2-in. slices
• 3 tbsp sugar