Ingredients

• 6 tablespoons mayonnaise
• 1/4 cup coarsely chopped fresh chives, divided
• 6 slices toasted white bread (such as Wonder Bread or Martin's potato bread)
• 1 pound very ripe multicolored tomatoes, sliced 1/4" thick
• 1 1/2 teaspoons kosher salt
• 1 1/2 teaspoons freshly ground black pepper
• 1 teaspoon sugar (optional)

Instructions

1. Combine mayonnaise and 2 Tbsp. chives in a small bowl. Spread each toast with 1 heaping Tbsp. chive-mayonnaise. Divide tomato slices among toasts and sprinkle each with salt, pepper, and sugar, if using. Top with remaining 2 Tbsp. chives.