These 3-ingredient Gruyere Winthrop bites are the kind of old-school party appetizer that never goes out of style: buttery, cheesy, crisp around the edges, and easy to pull together when you need something reliable for a holiday gathering or last-minute get-together. They have that cozy retro cocktail-party feel that makes them especially fitting in winter, and it’s easy to see why a tray of them would disappear almost as soon as guests walked through the door.
Serve these warm on a platter with toothpicks or small cocktail picks, alongside olives, spiced nuts, grapes, or a simple crudite tray to round out the snack table. They also pair especially well with sparkling wine, dry white wine, hot cider, or a classic holiday punch, and they make a great addition to a brunch spread with fresh fruit and a simple green salad.
3-Ingredient Gruyere Winthrop Bites
Servings: 24 bites
Ingredients
24 small rye party bread squares or cocktail rye slices
8 ounces Gruyere cheese, shredded
4 tablespoons mayonnaise
Directions
1. Preheat the oven to 375°F and line a baking sheet with parchment paper or leave it unlined for extra crisp bottoms.
2. In a medium bowl, stir together the shredded Gruyere and mayonnaise until the cheese is evenly coated and the mixture holds together.
3. Arrange the rye bread squares on the baking sheet, then spoon a small mound of the cheese mixture onto each piece, spreading it lightly so it covers most of the surface.
4. Bake for 8 to 10 minutes, or until the cheese is melted, bubbly, and the edges of the bread are toasted and golden.
5. Let the bites cool for 2 to 3 minutes, then transfer to a serving platter and serve warm.
Variations & Tips
Make-ahead tip: You can mix the Gruyere and mayonnaise a day in advance and keep it covered in the refrigerator. When party time rolls around, just top the bread and bake, which is a lifesaver during busy holiday hosting.
Bread swap: If you can’t find cocktail rye, cut regular rye bread into small squares. Pumpernickel also works well and gives the bites a deeper flavor and darker look on the platter.
Cheese tip: Shred the Gruyere yourself if possible for the best melt and flavor. Pre-shredded cheese can work in a pinch, but freshly shredded cheese gives a creamier top and more even browning.
Crispier bites: For extra crunch, bake the plain rye bread squares for 2 to 3 minutes before topping them with the cheese mixture. That little step helps the bread stay sturdy on a buffet table.