Grilled Salmon & Cheddar Sandwiches

Think of this as a tuna melt that grew up. Canned salmon gets a quick mix with mayo, grated onion, and lemon juice, then piles onto French bread under a slice of sharp cheddar. The whole thing hits a buttered griddle until the outside crisps gold and the cheese inside puddles into the salmon.

Use canned salmon with the bones and skin in. The bones are soft enough to mash into the spread, and they pump up calcium and richness in a way that the fancier skinless cans never match. If you’re squeamish, pick them out, but you’ll miss out.

Grated onion, not chopped, is the technical move. Grating breaks down the cell walls and releases sharp allium juice straight into the salmon mix so every bite gets seasoned. Diced onion just leaves you with crunchy raw bites.

Butter both sides generously before grilling. Skimping here means a pale crust and uneven browning. You want serious golden crackle, not a tan suggestion.

Pro Tips

• Use sharp or extra-sharp cheddar. Mild cheddar gets lost against the assertive salmon.
• Toast the bread one side first if your salmon mix is wet, to prevent sogginess.
• Press the sandwich gently with a spatula while it grills for even contact and meltier cheese.
• Cover the pan briefly with a lid if the cheese needs help melting before the bread overbrowns.

Variations

• Add a smear of Dijon mustard or horseradish to the salmon mix for sharper bite.
• Drop a few capers or chopped dill pickles into the spread for briny pop.
• Swap French bread for sourdough or rye for a different crust character.