Step-by-step instructions
- Preheat your oven to 200°C (400°F).
- Spread Dijon mustard on one side of each slice of bread.
- Layer ham and Gruyère cheese between two slices of bread, ensuring the mustard side faces inward.
- In a saucepan, melt 2 tablespoons of butter over medium heat. Whisk in flour and cook for about 1 minute.
- Gradually add milk while whisking until the mixture thickens. Season with salt and pepper.
- Dip each prepared sandwich in the milk mixture.
- In a skillet, melt the remaining butter and grill sandwiches until golden brown on both sides.
- Transfer to a baking sheet and bake for about 5 minutes until the cheese is bubbly.
- Serve hot and enjoy!
Best ways to enjoy it
The Crunchy Mister is not only delicious on its own; it can also be paired with various sides for a complete meal. Consider serving it with a fresh green salad drizzled with vinaigrette to balance the richness of the sandwich. For a bit of indulgence, sweet potato fries or crispy potato wedges make an excellent companion. And don’t forget a side of pickles—they add the perfect tang!
How to store
If you find yourself with leftovers (which is unlikely, given how delicious it is!), storing them properly is essential. Let the sandwiches cool completely before wrapping them tightly in foil or plastic wrap. They can be stored in the refrigerator for up to 3 days. When you’re ready to enjoy them again, simply reheat in a skillet over low heat to maintain that crunchy texture and melty cheese.
Helpful cooking tips
For the best results, use fresh ingredients. Quality ham and cheese can really elevate the dish’s flavors. If you’re short on time, consider pre-sliced ham or cheese to speed up the preparation process. Additionally, don’t skip out on the mustard; it adds a wonderful depth of flavor that really ties everything together!
Recipe variations
Feel free to get creative with your Crunchy Mister! You might swap the Gruyère for a sharp cheddar or even add sautéed vegetables for an extra nutritional boost. For a bit of heat, add a few slices of jalapeño or a dash of hot sauce. If you’re looking for a lighter version, substitute the butter with olive oil and use low-fat cheese to reduce calories.

Your questions answered
How long does it take to make Crunchy Mister?
The entire process takes about 30-40 minutes from start to finish, making it a quick and satisfying meal.
Can I use different types of cheese?
Absolutely! While Gruyère is delicious, feel free to experiment with other cheeses like Swiss, cheddar, or even mozzarella for a gooey twist.
How do I keep my sandwich crispy after reheating?
Reheat the sandwich in a skillet over low heat. This will help maintain that crispy exterior while ensuring the cheese melts perfectly inside.
