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Sardine & Tuna Fish Cakes with Tzatziki Sauce

heidi medina
High-protein tuna fish cakes with sardines, chickpeas, and herbs. Portuguese-inspired recipe using quality canned fish. Crispy, golden patties with tangy tzatziki sauce. Freezer-friendly and ready in 40 minutes. Perfect for batch cooking!
Prep Time 20 minutes
Cook Time 20 minutes
Total Time 40 minutes
Course Main Course
Cuisine Mediterranean
Servings 6 cakes

Ingredients
  

Fish Cake Ingredients

  • 1 385 g can tuna filet in olive oil (or 3 - 5 oz cans) drained, reserving 2-3 tbsp oil
  • 2 cans sardines in olive oil drained, reserving 2-3 tbsp oil
  • ½ small red bell pepper finely chopped
  • 1 cup cooked chickpeas drained and rinsed
  • ¼ large fresh fennel bulb finely chopped
  • 2 sticks celery finely chopped
  • 3 cloves garlic minced
  • ½ cup fresh parsley chopped
  • 2 large eggs
  • 2 tsp Dijon mustard
  • 1 cup fine bread crumbs
  • 1 tsp dried oregano
  • 2 tsp dried dill
  • 1 tsp black pepper
  • ½ tsp nutmeg
  • 1.5 tsp lemon salt or sea salt + zest from 1/2 lemon

Tzatziki Sauce Ingredients

  • 375 g Greek yogurt full-fat for creaminess
  • ¼ cup lemon juice
  • 3 cloves garlic minced
  • ½ cup fresh parsley chopped
  • 2 small cucumbers grated and excess water squeezed out
  • 1 tbsp dried dill or 2 tbsp fresh, chopped
  • Salt and pepper to taste

Instructions
 

Fish Cake Instructions

  • Drain tuna and sardines over a bowl to reserve 3-5 tbsp flavorful olive oil for cooking.
  • ​Flake fish into a large bowl (remove large bones if preferred; tiny soft ones add calcium).
  • Add chickpeas and lightly mash some with a fork for texture... mix of whole and mashed is perfect.
  • Finely chop red pepper, fennel, celery, garlic, and parsley by hand (or pulse chickpeas in food processor if you prefer).
  • ​Stir into fish along with eggs, mustard, bread crumbs, oregano, dill, pepper, nutmeg, and lemon salt.
  • Mix until just combined and holds when squeezed—if too wet, add breadcrumbs; too dry, splash reserved oil. Don't overwork or they'll get dense.
  • Portion with 1/2-cup measure or pack firmly into crumpet ring for neat rounds... lift to release.
  • Place each finished cake onto a plate. Cover and chill 30 minutes (or overnight) so crumbs hydrate and it firms up.

Tzatziki Sauce Instructions

  • Grate cucumbers and put into a kitchen towel. Twist and squeeze the towel until no more water comes out.
  • ​Mix drained cucumber with yogurt, lemon juice, garlic, parsley, dill, salt, and pepper.
  • Taste and adjust (more lemon for zing!). Chill and allow the flavors to bloom as it sits. Great for leftovers too.

Cooking the Fish Cakes

  • Heat 1-2 tbsp reserved oil in non-stick skillet over medium high heat.
  • Add cakes without crowding; cook 3-4 minutes per side till deep golden, crisp-edged, and aromatic (dill + nutmeg heaven).
  • Gently flip so cakes don't fall apart.
  • Remove from pan when both sides are golden brown and cakes have cooked through. Drain on wire rack. Keep warm in low oven if batching.

Serving Ideas

  • Pile hot cakes over arugula/lettuce with tzatziki dollop, or layer in bun with green lettuce (tartar sauce swap works too).

For Batching/Freezing:

  • Place plate in the freezer. Once completely frozen, place in a bag to use when needed. Thaw in the fridge. Reheat in a pan until center is warm and outsides are crispy.
Keyword canned sardines, fish, Tuna
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