Crispy Blueberry Grilled Cheese Recipe
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If you haven’t yet experienced the magic of a Crispy Blueberry Grilled Cheese, you are in for an unforgettable treat that perfectly balances sweet, tangy, and savory all in one bite. This sandwich transforms humble ingredients into a symphony of flavors, with crisp sourdough, melted cheeses, and a luscious homemade blueberry lemon thyme jam that elevates the classic grilled cheese to dazzling new heights. It’s the kind of comfort food that feels familiar yet surprises your taste buds with a delightfully fresh twist.

Ingredients You’ll Need
Every ingredient in this recipe plays a crucial role, proving that sometimes the simplest pantry staples come together to create something truly extraordinary. From the vibrant blueberries to the creamy blend of cheeses, each component contributes to the perfect harmony of this Crispy Blueberry Grilled Cheese.
- 1 pint fresh blueberries: These provide the vibrant color and juicy sweetness that form the base of the jam.
- 1/4 cup white sugar: Essential for balancing the tartness of the blueberries and lemon in the jam.
- Juice of 1 lemon: Adds bright acidity to lift the flavors and complement the sweetness.
- 1 small bundle lemon thyme: This herb infuses a subtle aromatic note that makes the jam extra special.
- 8 slices sourdough bread (1/4 inch thick): The perfect sturdy, tangy bread that crisps beautifully on the skillet.
- 4 oz white cheddar, grated: Sharp and rich, it melts smoothly and adds depth to the cheese blend.
- 4 oz whole mozzarella, shredded: For gooey, silky meltiness that pulls perfectly in every bite.
- 4 tbsp butter: Responsible for that irresistible golden, crispy crust on the sandwiches.
- Flaky sea salt: To finish, bringing out all the flavors with just the right touch of seasoning.
How to Make Crispy Blueberry Grilled Cheese
Step 1: Prepare the Blueberry Lemon Thyme Jam
Start by combining fresh blueberries, sugar, lemon juice, and the lemon thyme bundle in a saucepan over medium-high heat. As the mixture heats, it releases a fragrant blend of sweet and citrusy aromas, signaling the creation of a jam that will perfectly complement the savory sandwich. Once boiling, reduce to a simmer and let it gently bubble away, thickening for about twenty minutes total. Stir often to prevent sticking, and when the jam is luscious and thick, remove the thyme bundle and let it cool slightly. This jam is the heart of your Crispy Blueberry Grilled Cheese, infusing every bite with fruit-forward sweetness and herby nuance.
Step 2: Assemble the Sandwiches
Lay out half of your sourdough slices and generously spread each with a thick layer of the warm blueberry lemon thyme jam. Don’t hold back here—the jam is what sets this sandwich apart. Next, sprinkle a harmonious blend of sharp white cheddar and creamy mozzarella over the jam. These cheeses melt into a decadent filling that’s gooey and flavorful. Top with the remaining slices of bread, pressing gently to create a perfect sandwich ready for grilling.
Step 3: Grill the Sandwiches
Heat a cast iron skillet over medium heat and melt 2 tablespoons of butter, swirling to coat the pan evenly. Place two sandwiches in the skillet and cover with a lid to trap the heat, promoting thorough melting of the cheeses and even toasting. After about two to three minutes, flip the sandwiches carefully and cook another two to three minutes until each side is beautifully golden and the cheese is melted to perfection. Keep an eye on the heat to avoid burning. Finish the remaining sandwiches with the remaining butter using the same method. This step is where the sandwich earns its ‘crispy’ title.
Step 4: Finish and Serve
Slice each sandwich diagonally and sprinkle flaky sea salt across the top for bursts of seasoning with each bite. If you have extra lemon thyme leaves on hand, scatter some on top to enhance the aromatic complexity. Serve immediately to enjoy the contrast of crisp bread and melty, flavorful filling in every mouthwatering bite of this unforgettable Crispy Blueberry Grilled Cheese.
How to Serve Crispy Blueberry Grilled Cheese

Garnishes
Simple garnishes can elevate your sandwich visually and flavor-wise. Flaky sea salt adds delightful texture and seasoning enhancement, while a few fresh lemon thyme leaves offer a vibrant, herbal aroma that complements the sandwich’s jam beautifully. A light drizzle of honey can also add an extra touch of sweetness for those who want to celebrate the fruity aspects a little more.
Side Dishes
The Crispy Blueberry Grilled Cheese pairs wonderfully with bright, fresh sides to balance its richness. A crisp green salad with a lemon vinaigrette cuts through the cheese’s creaminess, while a bowl of roasted butternut squash soup offers warm, complementary sweetness. For a casual gathering, try serving alongside kettle-cooked chips or pickled vegetables to add a crunchy, tangy contrast.
Creative Ways to Present
For a fun twist, cut the sandwiches into smaller finger-food portions—perfect for parties! You can also experiment by swapping the sourdough for hearty multigrain or brioche for a different flavor profile and texture. Serving the sandwiches with the blueberry jam on the side as a dip lets your guests customize every bite. For brunch, pair it with a glass of sparkling lemonade or a fruity cocktail to celebrate the sweet-savory vibe.
Make Ahead and Storage
Storing Leftovers
If you’re lucky to have leftovers—which might be hard to come by!—wrap each sandwich tightly in plastic wrap or foil and store them in the refrigerator. This keeps them fresh for up to two days without the bread becoming soggy or the flavors dulling.
Freezing
For longer storage, you can freeze the sandwiches individually, wrapped well in plastic wrap and then in foil or placed in a freezer bag. Freeze for up to one month. When ready to enjoy, thaw overnight in the fridge before reheating to preserve texture and flavor.
Reheating
The best way to reheat your Crispy Blueberry Grilled Cheese is in a skillet over low to medium heat. This restores that coveted crispy crust while gently warming the cheese inside. Avoid microwaving as it can turn the bread soggy and the cheese rubbery. If pressed for time, a toaster oven also works well to recapture crispiness.
FAQs
Can I use frozen blueberries for the jam?
Yes, frozen blueberries work well if fresh aren’t available. Just thaw them first and drain any excess liquid to avoid a runny jam. The flavor will still be wonderfully vibrant.
What cheeses can I substitute for cheddar and mozzarella?
Feel free to experiment with cheeses like gouda, fontina, or even a sharp manchego. The key is to balance a melty cheese with one that offers sharpness for flavor contrast.
Is it necessary to use lemon thyme in the jam?
Lemon thyme adds a unique citrusy-herbal note that really brightens the jam, but if unavailable, regular thyme or even a small splash of lemon zest can be a great substitute.
Can I make the blueberry jam ahead of time?
Absolutely! The jam can be made up to a week in advance and stored in the refrigerator. Reheat gently before assembling your sandwiches to bring back that lovely syrupy texture.
How can I make the sandwich vegan?
To make a vegan version, swap the butter for plant-based margarine, choose dairy-free cheeses that melt well, and make sure your bread is egg- and dairy-free. The blueberry jam is naturally vegan and will shine in this version too!
Final Thoughts
There is something irresistibly charming about a Crispy Blueberry Grilled Cheese that invites you to slow down, savor, and enjoy an unexpected twist on a beloved classic. Whether you’re serving it for brunch, a cozy lunch, or a special snack, this sandwich offers comfort, creativity, and pure deliciousness. I wholeheartedly encourage you to whip up this recipe and share the joy it brings—your taste buds will thank you!
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PrintCrispy Blueberry Grilled Cheese Recipe
A delightful twist on a classic grilled cheese sandwich with a sweet and tangy blueberry lemon thyme jam paired with melted white cheddar and mozzarella cheeses on crispy sourdough bread.
- Prep Time: 15 minutes
- Cook Time: 20 minutes
- Total Time: 35 minutes
- Yield: 4 sandwiches 1x
- Category: Snack, Sandwich
- Method: Grilling, Simmering
- Cuisine: American
- Diet: Vegetarian
Ingredients
Blueberry Lemon Thyme Jam
- 1 pint fresh blueberries
- 1/4 cup white sugar
- Juice of 1 lemon
- 1 small bundle lemon thyme, bundled with kitchen twine
Sandwiches
- 8 slices sourdough bread, each 1/4 inch thick
- 4 oz white cheddar cheese, grated
- 4 oz whole mozzarella cheese, shredded
- 4 tbsp butter
- Flaky sea salt, for finishing
Instructions
- Prepare the Blueberry Lemon Thyme Jam: Combine the fresh blueberries, white sugar, lemon juice, and bundled lemon thyme in a 2-quart saucepan over medium-high heat. Bring the mixture to a boil, then reduce the heat to medium-low and simmer for about 10 minutes. Lower the heat to low and simmer for another 10 minutes, stirring often, until the jam is thickened. Remove and discard the lemon thyme bundle. Allow the jam to cool for 10 minutes before using.
- Assemble the Sandwiches: Lay out 4 slices of the sourdough bread. Spread the blueberry lemon thyme jam evenly onto each slice. Sprinkle the white cheddar and mozzarella cheeses over the jam. Top with the remaining 4 bread slices to form sandwiches. Be generous with the jam for a nicely sweet and tangy flavor.
- Grill the Sandwiches: Heat a 12-inch cast iron skillet over medium heat and add 2 tablespoons of butter, letting it melt. Place two assembled sandwiches in the skillet and cover with a lid. Cook for 2-3 minutes until golden on the bottom, then flip and cook for another 2-3 minutes, or until the bread is golden and the cheese is melted. Adjust the heat as needed to prevent burning. Transfer the cooked sandwiches to a cutting board, add the remaining 2 tablespoons of butter, and repeat the process with the remaining two sandwiches.
- Finish and Serve: Cut each sandwich in half. Top with a sprinkle of flaky sea salt and extra lemon thyme leaves if desired for an aromatic finish. Sprinkling fresh thyme on top adds a delightful burst of flavor.
Notes
- Use fresh lemon thyme for the best aromatic flavor in the jam and as a garnish.
- Adjust the amount of blueberry jam to your preference for sweetness and tartness.
- Use a cast iron skillet for even heat distribution and a crispy crust.
- Ensure the butter is thoroughly melted and the heat is moderate to avoid burning the bread while melting the cheese.
- If desired, you can substitute sourdough with other sturdy bread like country white or rye.
Nutrition
- Serving Size: 1 sandwich
- Calories: 450 kcal
- Sugar: 15 g
- Sodium: 400 mg
- Fat: 24 g
- Saturated Fat: 14 g
- Unsaturated Fat: 8 g
- Trans Fat: 0.5 g
- Carbohydrates: 38 g
- Fiber: 3 g
- Protein: 16 g
- Cholesterol: 50 mg
Keywords: blueberry grilled cheese, blueberry jam sandwich, lemon thyme jam, grilled cheese recipe, sourdough sandwich, sweet and savory sandwich