Shrimp Melt

Ingredients

• 3/4 cup mayonaise
• 1/2 cup onion, finely grated
• 2 cups Cheddar cheese, finely shredded
• 1 tablespoon lemon juice, freshly squeezed
• 1/4 pound cooked shrimp, coarsely chopped
• 1 loaf white bread, thinly sliced and lightly toasted