Sardines on toast might not be glamorous, but mash some avocado on there and suddenly it's a high protein, omega-3 rich lunch that's genuinely delicious.
Toast the whole wheat bread slices in a toaster or oven at medium-high heat until golden brown and crisp, about 3-4 minutes.
In a bowl, mash the ripe avocado with a fork. Squeeze in the juice from half a lemon, and season with a pinch of salt and black pepper.
While the bread is still hot, lightly drizzle each slice with a bit of olive oil to enhance flavor and protect crunchiness.
Spread the mashed avocado evenly onto each toasted bread slice, working quickly so the toast retains its texture.
Open the canned sardines, drain lightly (reserving a bit of oil), and gently layer sardines over the avocado topping. Sprinkle red pepper flakes for brightness.
Quarter the cherry tomatoes and scatter them over the toast. Finish with another light drizzle of olive oil and a touch more salt and pepper if desired.
Serve immediately, ensuring the toast remains crisp and the toppings vibrant.