Sardine Toasts With Tomato and Sweet Onion

Name: Sardine Toasts With Tomato and Sweet Onion
Cuisine: European, Italian, Mediterranean
Ingredients: 4 thick slices crusty sourdough bread; 1 garlic clove, halved; Softened butter, as needed; 1 large ripe tomato, thinly sliced; 1 can sardines (6 to 7 ounces), deboned if you like; ¼ small sweet or red onion, thinly sliced; Extra-virgin olive oil, for drizzling; Fresh lemon juice, to taste; Flaky sea salt; Coarsely ground black pepper; Fresh basil leaves, torn (optional)

3 steps

Updated at: Tue, 26 May 2026 08:58:27 GMT

Nutrition balance score

Good

Glycemic Index

Low

Glycemic Load

Moderate

Nutrition per serving

Calories470.4 kcal (24%)

Total Fat24.5 g (35%)

Carbs34.8 g (13%)

Sugars5.6 g (6%)

Protein28 g (56%)

Sodium991.2 mg (50%)

Fiber2.5 g (9%)

% Daily Values based on a 2,000 calorie diet

Ingredients

2 servings

4slices sourdough bread

large, ripe, thinly sliced

1 x 6 ouncescan sardines

deboned if you like

0.25sweet onion

small, or red, thinly sliced

extra-virgin olive oil

coarsely ground black pepper

Fresh basil leaves

torn, optional

Instructions

Step 1

Toast the bread under a broiler (on both sides) or in the toaster.

Step 2

While the toast is still warm, immediately rub it (aggressively!) with the cut side of the garlic clove, then spread toast generously with butter. Top butter with tomato slices and lightly salt them.

Step 3

Top tomatoes with sardines and then onion slices. Drizzle with olive oil and lemon juice, then season with more salt and pepper. Garnish with basil if you like and serve immediately.