Quick Recipe Version (TL;DR)
Quick Ingredients
- 1 can tuna in water, 5 oz (142 g), drained well
- 1 tbsp mayonnaise (15 g)
- 1 tbsp plain Greek yogurt (15 g)
- 2 tsp sweet relish (10 g) or 1 tbsp dill pickle, finely diced and patted dry (15 g)
- 1 tsp Dijon or yellow mustard (5 g)
- 1 slice sturdy sandwich bread, torn into 1-inch pieces (about 40 g)
- 1/3 cup shredded cheddar cheese (38 g)
- 1/4 tsp freshly ground black pepper
- 1/8 tsp kosher salt (optional, to taste)
Do This
- 1) Drain tuna very well and flake it with a fork.
- 2) Stir tuna with mayo, Greek yogurt, relish (or pickles), mustard, and optional salt.
- 3) Put torn bread pieces in a wide microwave-safe bowl.
- 4) Spoon tuna mixture over bread and spread into an even layer.
- 5) Top with cheddar.
- 6) Microwave on High (100% power) for 45 seconds, then 15-second bursts until the cheese is fully melted (about 30 seconds more).
- 7) Rest 30 seconds, finish with black pepper, and eat warm.
Why You’ll Love This Recipe
- Classic tuna melt flavor with a fast, no-pan, microwave method.
- Comforting, cheesy, and filling for an easy lunch at home or work.
- Uses simple pantry staples and flexible add-ins.
- Ready in about 6 minutes with minimal dishes.
Grocery List
- Produce: dill pickles (if not using relish) (optional)
- Dairy: plain Greek yogurt, shredded cheddar cheese
- Pantry: canned tuna, mayonnaise, relish (optional), mustard, sandwich bread, kosher salt, black pepper
Full Ingredients
Tuna Salad Mixture
- 1 can tuna in water, 5 oz (142 g), drained very well
- 1 tbsp mayonnaise (15 g)
- 1 tbsp plain Greek yogurt (15 g)
- 2 tsp sweet relish (10 g) or 1 tbsp dill pickle, finely diced and patted dry (15 g)
- 1 tsp Dijon mustard or yellow mustard (5 g)
- 1/8 tsp kosher salt (optional, to taste)
Base and Topping
- 1 slice sturdy sandwich bread, torn into 1-inch pieces (about 40 g)
- 1/3 cup shredded cheddar cheese (38 g)
To Finish
- 1/4 tsp freshly ground black pepper (or to taste)
Step-by-Step Instructions
Step 1: Drain and flake the tuna
Open and drain 1 can (5 oz / 142 g) tuna in water. Press the lid firmly to squeeze out as much liquid as possible.
Add the tuna to a small bowl and flake it with a fork until it’s evenly broken up (this helps it mix smoothly and heat evenly).
Step 2: Mix the creamy tuna filling
Add 1 tbsp (15 g) mayonnaise, 1 tbsp (15 g) Greek yogurt, 2 tsp (10 g) sweet relish (or 1 tbsp / 15 g finely diced dill pickle),
1 tsp (5 g) mustard, and optional 1/8 tsp kosher salt.
Stir until thoroughly combined. Taste and adjust salt if needed (many tunas and pickles are already salty).
Step 3: Build the bowl base
Tear 1 slice of sturdy sandwich bread (about 40 g) into 1-inch pieces and place them in a wide, shallow microwave-safe bowl.
Spreading the bread out in a single layer helps it warm quickly.
Step 4: Add tuna and cheddar
Spoon the tuna mixture over the bread pieces and spread it into an even layer so every bite gets some filling.
Sprinkle 1/3 cup (38 g) shredded cheddar evenly over the top.
Step 5: Microwave until melty
Microwave uncovered on High (100% power) for 45 seconds.
Check the cheese: if it’s not fully melted, continue microwaving in 15-second bursts until melted and glossy, usually 30 seconds more.
(Total microwave time is typically 1 minute 15 seconds, depending on your microwave.)
The bowl may be hot. Use a towel or oven mitt to remove it.
Step 6: Rest, pepper, and serve
Let the tuna melt bowl rest for 30 seconds so the heat evens out and the cheese settles.
Finish with 1/4 tsp freshly ground black pepper (or to taste). Serve immediately while warm and melty.
Pro Tips
- Drain well for the best texture: Excess water can make the tuna mixture runny and the bread soggy.
- Pat pickles dry: If using diced pickles instead of relish, blot them with a paper towel before mixing in.
- Use a wide bowl: A shallow, wider bowl melts the cheese faster and more evenly than a deep mug.
- Short microwave bursts prevent tough cheese: Overheating can make cheddar oily or rubbery. Stop as soon as it’s melted.
- Want a crisper base? Toast the bread first, then assemble and microwave just long enough to melt the cheese.
Variations
- Crackers tuna melt bowl: Replace the bread with 8 sturdy crackers (about 20 g). Microwave the tuna and cheese first, then scoop with crackers to keep them crisp.
- Spicy tuna melt: Add 1/4 tsp hot sauce or 1/8 tsp cayenne to the tuna mixture, then finish with extra black pepper.
- Deli-style: Stir in 1 tbsp finely diced celery (10 g) if you like extra crunch (great if you’re using relish and want more texture).
Storage & Make-Ahead
For best results, make and eat this tuna melt bowl right away. If you want to prep ahead, mix the tuna salad filling (without bread and cheese),
cover tightly, and refrigerate for up to 2 days. When ready to eat, assemble with fresh bread and cheddar, then microwave as directed.
Reheating fully assembled leftovers is not ideal because the bread softens more each time it’s warmed.
Nutrition (per serving)
Approximate, based on the ingredients listed: 520 calories, 38 g protein, 28 g fat, 28 g carbohydrates, 3 g fiber, 5 g sugar, 980 mg sodium.
