This Three-Cheese Grilled Cheese Sandwich, also known as The Mousetrap, takes a classic comfort-food favorite to another level. Made with sharp Cheddar, Monterey Jack, creamy Havarti, and hearty sourdough bread, this homemade grilled cheese delivers a golden, crispy exterior and a rich, gooey center.
Inspired by a recipe from Tillamook, The Mousetrap combines three delicious cheeses for a sandwich that’s especially satisfying. Sharp Cheddar adds a bold, tangy flavor, Monterey Jack melts beautifully, and Havarti contributes a smooth, creamy texture. Together, they create a delicious balance of flavor and meltability.
One of the secrets to this recipe is the combination of softened salted butter and mayonnaise spread on the outside of the sourdough bread. As the sandwich cooks, the spread helps the bread develop a beautifully browned crust while the cheeses melt inside.
With just six ingredients and approximately 15 minutes from start to finish, this easy grilled cheese recipe is perfect for a quick lunch, a simple dinner, or a comforting snack.
The recipe makes four sandwiches using eight slices of sourdough bread. Each sandwich gets one slice of sharp Cheddar, one slice of Monterey Jack, and one slice of Havarti.
For stovetop cooking, a cast iron skillet is an excellent option because it distributes heat evenly and helps develop a crisp, golden crust.
Assemble the sandwiches with the butter-mayo spread facing outward, then cook over medium-low heat until the bread is toasted and the cheese has melted. The lower heat gives all three cheeses time to soften without burning the sourdough.
The original recipe also offers an oven method using a preheated cast iron pan for open-faced sandwiches.
Serve The Mousetrap immediately while the cheese is warm and gooey. It’s especially delicious alongside tomato soup, a fresh green salad, or your favorite homemade pickles.
Whether you’re a longtime grilled cheese lover or looking for a new twist on a familiar sandwich, this three-cheese sourdough grilled cheese is an easy recipe worth adding to your collection.
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Grilled Cheese – The Mousetrap
- Total Time: :15
- Yield: 4 1x
Ingredients
- 4 tsp Tillamook Salted Butter softened at room temperature
- 4 tsp mayo
- 4 Tillamook Sharp Cheddar Cheese Slices
- 4 Tillamook Monterey Jack Cheese Slices
- 4 slices creamy Havarti Cheese
- 8 slices high-quality Sourdough bread
Instructions
- Mix the softened butter and mayonnaise until combined.
- Spread the mixture on one side of each sourdough slice.
- Place four slices spread-side down and layer each with one slice of sharp Cheddar, Monterey Jack, and Havarti.
- Top with the remaining bread, keeping the butter-mayo spread facing outward.
- Heat a skillet over medium-low heat.
- Cook the sandwiches until the undersides are golden brown, approximately 3–5 minutes.
- Flip carefully and continue cooking for another 3–5 minutes, until the bread is toasted and all three cheeses have melted.
- Serve immediately.
- Prep Time: :05
- Cook Time: :10
- Category: Sandwich
- Method: Griddle or Stove Top