Tuna Melt Sandwich

Name: Tuna Melt Sandwich
Total time: 20 min
Yield: 2 servings
Cuisine: american
Ingredients: 320 g tuna in brine; 2 piece Spring onions; 4 tbsp Mayonnaise; 1 tsp Dijon mustard; 80 g Mature cheddar; 4 slice Sourdough bread; 10 g Unsalted butter; 1 piece Celery; 1 tbsp Lemon juice; 0.25 tsp Ground black pepper; 1 piece ripe tomatoes

20 min · 20 min active · makes ~560 g · Trivial

A tuna melt sandwich on sourdough bread with mature cheddar, tuna in brine mixed with mayonnaise, Dijon mustard, celery, spring onions, and ripe tomatoes.

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Tuna Melt Sandwich

A tuna melt sandwich on sourdough bread with mature cheddar, tuna in brine mixed with mayonnaise, Dijon mustard, celery, spring onions, and ripe tomatoes.

See more →

TOTAL TIME

20 min

ACTIVE TIME

20 min

QUANTITY

~560 g

DIFFICULTY

Trivial

CUISINE

—

Who’s eating

Cooking for A typical adult.

This should leave everyone comfortably full.

Portions & fullness

Ingredients0/11

Tools0/13

Ingredients

0/11 gathered · 2 servings

320g

2piece

4tbsp

1tsp

80g

4slice

10g

1piece

1tbsp

0.25tsp

1piece

#	Quantity	Notes	State
1	320g	—	—
2	2piece	—	—
3	4tbsp	—	—
4	1tsp	—	—
5	80g	—	—
6	4slice	—	—
7	10g	—	—
8	1piece	—	—
9	1tbsp	—	—
10	0.25tsp	—	—
11	1piece	—	—

Tools

14 items

Serveware

1 item

Procedure

28 steps

1 of 28

Turn the grill to its highest setting and allow it to heat fully.

220°C

⏱ 3 min

2 of 28

Tip the tuna into a colander and press it firmly to drain off all the brine.

Tuna in brine · 320 g

⏱ 30s

ResultDrained tunaused in step 7

3 of 28

Strip any damaged or papery outer layers from the spring onions and trim the root ends.

Spring onions · 2 piece

⏱ 30s

ResultPeeled spring onions

4 of 28

Trim and finely slice the spring onions on the diagonal.

Peeled spring onions · step 3

⏱ 1 min

ResultThinly sliced spring onionsused in step 8

5 of 28

Spoon the mayonnaise into the mixing bowl.

Mayonnaise · 4 tbsp

⏱ 15s

ResultMayonnaise

6 of 28

Add the Dijon mustard to the mayonnaise in the bowl.

Dijon mustard · 1 tsp

⏱ 10s

ResultMayonnaise and dijon mustard

7 of 28

Add the drained tuna to the Dijon mustard and mayonnaise mixture.

Drained tuna · step 2

⏱ 15s

ResultDrained tuna and mayonnaise and dijon mustard

8 of 28

Add the sliced spring onions to the tuna mixture.

Thinly sliced spring onions · step 4

⏱ 10s

ResultDrained tuna mixture

9 of 28

Grate the mature Cheddar on the coarse side of the grater into a small bowl.

Mature cheddar · 80 g

⏱ 2 min

ResultGrated mature cheddarused in step 23

10 of 28

Slice the 4 slices of sourdough bread

Sourdough bread · 4 slice

⏱ 20s

ResultSliced sourdough

11 of 28

Lay the sourdough slices in a single layer on the baking tray.

Sliced sourdough · step 10

⏱ 15s

ResultSliced sourdough

12 of 28

Spread the butter evenly over one side of each sourdough slice.

Unsalted butter · 10 g

⏱ 1 min

ResultButtered sourdough

13 of 28

Rinse the celery stalk under cold running water.

Celery · 1 piece

⏱ 30s

ResultRinsed celery

14 of 28

Dice the rinsed celery into small, even pieces.

⏱ 1 min

ResultDiced Celery

15 of 28

Add the diced celery to the tuna mixture.

Diced Celery · step 14

⏱ 10s

ResultDrained tuna mixture

16 of 28

Pour the lemon juice into the tuna mixture.

Lemon juice · 1 tbsp

⏱ 10s

ResultDrained tuna mixture

17 of 28

Add a quarter teaspoon of ground black pepper to the tuna mixture.

Ground black pepper · 0.25 tsp

⏱ 20s

ResultDrained tuna mixture

18 of 28

Mix everything together thoroughly until the tuna is evenly coated and the filling is well combined.

⏱ 1 min

ResultSeasoned tuna mixture

19 of 28

Spread the seasoned tuna mixture generously and evenly over the buttered sourdough slices on the baking tray.

Seasoned tuna mixture · step 18

⏱ 1 min

ResultBread with tuna topping

20 of 28

Rinse the tomato under cold running water.

Ripe tomatoes · 1 piece

⏱ 30s

ResultRinsed ripe tomatoes

21 of 28

Slice the rinsed tomato into thin, even rounds.

⏱ 1 min

ResultSliced tomato

22 of 28

Lay the tomato slices over the tuna topping on each slice of bread.

Sliced tomato · step 21

⏱ 20s

ResultBread with tuna and tomato

23 of 28

Scatter the grated Cheddar evenly over the tomato on each open-faced slice.

Grated mature cheddar · step 9

⏱ 30s

ResultAssembled open-faced melts

24 of 28

Using oven gloves, slide the baking tray under the hot grill.

⏱ 30s

ResultAssembled open-faced melts

25 of 28

Grill the open-faced melts until the Cheddar is melted, bubbling and golden at the edges.

220°C

⏱ 4 min 30s

ResultGrilled cheese toasts

26 of 28

Using oven gloves, carefully remove the baking tray from the grill and set it on the counter.

⏱ 30s

ResultGrilled cheese toasts

27 of 28

Press two grilled cheese toasts together, cheese sides facing inward, to form each sandwich.

⏱ 30s

ResultAssembled sandwiches

28 of 28

Cut each assembled sandwich in half diagonally with a bread knife.

⏱ 1 min

ResultTuna melt sandwiches

Total Time20 min

#	Product	Tool	Action
1	—	220°C	Turn the grill to its highest setting and allow it to heat fully.⏱ 3 min
2	320 g		Tip the tuna into a colander and press it firmly to drain off all the brine.⏱ 30sResultDrained tunaused in step 7
3	2 piece		Strip any damaged or papery outer layers from the spring onions and trim the root ends.⏱ 30sResultPeeled spring onions
4	Peeled spring onionsstep 3		Trim and finely slice the spring onions on the diagonal.⏱ 1 minResultThinly sliced spring onionsused in step 8
5	4 tbsp		Spoon the mayonnaise into the mixing bowl.⏱ 15sResultMayonnaise
6	1 tsp		Add the Dijon mustard to the mayonnaise in the bowl.⏱ 10sResultMayonnaise and dijon mustard
7	Drained tunastep 2		Add the drained tuna to the Dijon mustard and mayonnaise mixture.⏱ 15sResultDrained tuna and mayonnaise and dijon mustard
8	Thinly sliced spring onionsstep 4		Add the sliced spring onions to the tuna mixture.⏱ 10sResultDrained tuna mixture
9	80 g		Grate the mature Cheddar on the coarse side of the grater into a small bowl.⏱ 2 minResultGrated mature cheddarused in step 23
10	4 slice		Slice the 4 slices of sourdough bread⏱ 20sResultSliced sourdough
11	Sliced sourdoughstep 10		Lay the sourdough slices in a single layer on the baking tray.⏱ 15sResultSliced sourdough
12	10 g		Spread the butter evenly over one side of each sourdough slice.⏱ 1 minResultButtered sourdough
13	1 piece		Rinse the celery stalk under cold running water.⏱ 30sResultRinsed celery
14	—		Dice the rinsed celery into small, even pieces.⏱ 1 minResultDiced Celery
15	Diced Celerystep 14		Add the diced celery to the tuna mixture.⏱ 10sResultDrained tuna mixture
16	1 tbsp		Pour the lemon juice into the tuna mixture.⏱ 10sResultDrained tuna mixture
17	0.25 tsp		Add a quarter teaspoon of ground black pepper to the tuna mixture.⏱ 20sResultDrained tuna mixture
18	—		Mix everything together thoroughly until the tuna is evenly coated and the filling is well combined.⏱ 1 minResultSeasoned tuna mixture
19	Seasoned tuna mixturestep 18		Spread the seasoned tuna mixture generously and evenly over the buttered sourdough slices on the baking tray.⏱ 1 minResultBread with tuna topping
20	1 piece		Rinse the tomato under cold running water.⏱ 30sResultRinsed ripe tomatoes
21	—		Slice the rinsed tomato into thin, even rounds.⏱ 1 minResultSliced tomato
22	Sliced tomatostep 21		Lay the tomato slices over the tuna topping on each slice of bread.⏱ 20sResultBread with tuna and tomato
23	Grated mature cheddarstep 9		Scatter the grated Cheddar evenly over the tomato on each open-faced slice.⏱ 30sResultAssembled open-faced melts
24	—		Using oven gloves, slide the baking tray under the hot grill.⏱ 30sResultAssembled open-faced melts
25	—	220°C	Grill the open-faced melts until the Cheddar is melted, bubbling and golden at the edges.⏱ 4 min 30sResultGrilled cheese toasts
26	—		Using oven gloves, carefully remove the baking tray from the grill and set it on the counter.⏱ 30sResultGrilled cheese toasts
27	—		Press two grilled cheese toasts together, cheese sides facing inward, to form each sandwich.⏱ 30sResultAssembled sandwiches
28	—		Cut each assembled sandwich in half diagonally with a bread knife.⏱ 1 minResultTuna melt sandwiches
Total Time			20 min

Serving

Transfer the tuna melt sandwich halves to a serving plate and serve immediately.

Nutrition

per serving

Estimated · pre-cooking · 91% ingredients covered

Nutrient	Per serving
	735kcal
	53g
	42g
	15g
	35g
	1g
	2g
	1,303mg

Ingredients0/11

Tools0/13

Recipe

Tuna Melt Sandwich

A tuna melt sandwich on sourdough bread with mature cheddar, tuna in brine mixed with mayonnaise, Dijon mustard, celery, spring onions, and ripe tomatoes.

What you’ll doYou will drain tinned tuna and mix it with mayonnaise, mustard, spring onions, celery, lemon juice and pepper to make a filling. Meanwhile, butter sourdough slices, top them with the tuna mixture, tomato, and grated Cheddar, then grill under high heat until the cheese bubbles and browns. Once cooled slightly, you will press the toasts together and cut them diagonally to serve.

Serves2

Total20 min

LevelMedium

Ingredients

Tuna in brine320 g
Spring onions2 piece
Mayonnaise4 tbsp
Dijon mustard1 tsp
Mature cheddar80 g
Sourdough bread4 slice
Unsalted butter10 g
Celery1 piece
Lemon juice1 tbsp
Ground black pepper0.25 tsp
Ripe tomatoes1 piece

Tools

Grill or broilerMixing bowlServing plateSmall bowlBread knifePalette knifeChef's knifeWooden spoonBaking trayColanderGraterOven gloveChopping boardGrill broiler

Method

Turn the grill to its highest setting and allow it to heat fully.

220°C3 minGrill broiler

Tip the tuna into a colander and press it firmly to drain off all the brine.

Result · Drained tuna · used in step 7

30sColanderTuna in brine · 320 g

Strip any damaged or papery outer layers from the spring onions and trim the root ends.

30sChopping board, Chefs knifeSpring onions · 2 piece

Trim and finely slice the spring onions on the diagonal.

Result · Thinly sliced spring onions · used in step 8

1 minChopping board, Chefs knifePeeled spring onions · step 3

Spoon the mayonnaise into the mixing bowl.

15sMixing bowlMayonnaise · 4 tbsp

Add the Dijon mustard to the mayonnaise in the bowl.

10sMixing bowlDijon mustard · 1 tsp

Add the drained tuna to the Dijon mustard and mayonnaise mixture.

15sMixing bowlDrained tuna · step 2

Add the sliced spring onions to the tuna mixture.

10sMixing bowlThinly sliced spring onions · step 4

Grate the mature Cheddar on the coarse side of the grater into a small bowl.

Result · Grated mature cheddar · used in step 23

2 minSmall bowl, GraterMature cheddar · 80 g

Slice the 4 slices of sourdough bread

20sChopping board, Bread knifeSourdough bread · 4 slice

Lay the sourdough slices in a single layer on the baking tray.

15sBaking traySliced sourdough · step 10

Spread the butter evenly over one side of each sourdough slice.

1 minBaking tray, Palette knifeUnsalted butter · 10 g

Rinse the celery stalk under cold running water.

30sColanderCelery · 1 piece

Dice the rinsed celery into small, even pieces.

1 minChopping board, Chefs knife

Add the diced celery to the tuna mixture.

10sMixing bowlDiced Celery · step 14

Pour the lemon juice into the tuna mixture.

10sMixing bowlLemon juice · 1 tbsp

Add a quarter teaspoon of ground black pepper to the tuna mixture.

20sMixing bowlGround black pepper · 0.25 tsp

Mix everything together thoroughly until the tuna is evenly coated and the filling is well combined.

1 minMixing bowl, Wooden spoon

Spread the seasoned tuna mixture generously and evenly over the buttered sourdough slices on the baking tray.

1 minBaking tray, Palette knifeSeasoned tuna mixture · step 18

Rinse the tomato under cold running water.

30sColanderRipe tomatoes · 1 piece

Slice the rinsed tomato into thin, even rounds.

1 minChopping board, Chefs knife

Lay the tomato slices over the tuna topping on each slice of bread.

20sBaking traySliced tomato · step 21

Scatter the grated Cheddar evenly over the tomato on each open-faced slice.

30sBaking trayGrated mature cheddar · step 9

Using oven gloves, slide the baking tray under the hot grill.

30sBaking tray, Grill broiler, Oven glove

Grill the open-faced melts until the Cheddar is melted, bubbling and golden at the edges.

220°C4 min 30sBaking tray, Grill broiler

Using oven gloves, carefully remove the baking tray from the grill and set it on the counter.

30sBaking tray, Grill broiler, Oven glove

Press two grilled cheese toasts together, cheese sides facing inward, to form each sandwich.

30sChopping board

Cut each assembled sandwich in half diagonally with a bread knife.

1 minChopping board, Bread knife

Transfer the tuna melt sandwich halves to a serving plate and serve immediately.

Result · Tuna melt sandwiches

30sServing plateTuna melt sandwiches · step 28

Printed 11 October 2026