This avocado tuna breakfast spread is the kind of fast, filling breakfast that feels a little “put together” even when you’re half-awake. You mash ripe avocado with tuna and chopped boiled eggs, then brighten it up with crisp cucumber, red onion, cilantro, and a little Dijon for bite—perfect on sourdough toast. Nutrition-wise, it’s protein-forward and satisfying thanks to the tuna and eggs, with healthy fats from avocado, but it can get a bit rich (and salty) depending on your tuna and mayo, so it’s worth tasting as you season.
It’s especially good for anyone who needs a hearty breakfast that doesn’t require cooking first thing (if your eggs are already boiled). If you like savory breakfasts, this fits right in with options like baked avocado eggs, but this one is more “mix and spread” and easy to take on the go. The best texture tip: keep the mash slightly chunky so you still get pops of cucumber and egg instead of a fully blended paste.
Why This Recipe Is Helpful
- Uses simple, everyday ingredients and comes together in about 10–15 minutes (faster if eggs are pre-boiled).
- High in protein from tuna and eggs, which can help it feel more filling than sweet breakfasts.
- No stove required (other than boiling the eggs), and it’s easy to meal-prep components.
- Crunchy cucumber and onion keep the spread from tasting heavy or one-note.
- Works beyond breakfast: makes a solid lunch toast, sandwich filling, or snack with crackers/veg.
- Easy to adjust for taste (more Dijon for tang, more mayo for creaminess, more cucumber for freshness).
Who This Recipe Is Best For
This is great for home cooks who want a savory, satisfying breakfast that’s not fussy—busy mornings, work-from-home lunches, or anyone tired of cereal. It also suits people who like high-protein meals and want something creamy without needing to cook a whole skillet breakfast.
If you’re feeding more than one person, it scales well—just double everything and mash in a bigger bowl.
Who Should Be Careful
- People watching sodium: canned tuna, mustard, and added salt can push this higher in sodium. Choose low-sodium tuna if needed and season lightly.
- Anyone who doesn’t tolerate rich, fatty breakfasts well: avocado plus mayo can feel heavy for some—use less mayo or swap it (ideas below).
- Egg or fish allergies: this one isn’t flexible if you need to avoid both.
- People managing blood sugar: it’s fairly low in added sugar, but sourdough is still bread; consider portion size or serve the spread with extra veg instead of (or alongside) toast.
Ingredients
- 1 ripe avocado (about 6–7 oz / 170–200 g)
- 1 can yellow tuna, drained, 5 oz (142 g)
- 2 large eggs, hard-boiled and chopped
- 1/2 cucumber, diced (about 1 cup / 120 g)
- 1/4 small red onion, finely diced (about 1/4 cup / 40 g)
- 2 tablespoons chopped fresh cilantro (about 6 g), plus more to taste
- 1/2 teaspoon Dijon mustard (2–3 g)
- 1/4 teaspoon garlic flakes (about 0.5 g)
- 1 tablespoon mayonnaise (15 g)
- Salt, to taste
- 2 slices sourdough bread, toasted (about 3–4 oz / 85–115 g total)
Ingredient Notes
- Avocado: Use one that gives slightly when you press it. If it’s under-ripe, the spread tastes flat and won’t mash smoothly.
- Yellow tuna: Drain it well so the spread doesn’t turn watery. Oil-packed is richer; water-packed is lighter.
- Eggs: Hard-boiled adds extra protein and a “breakfast salad” feel. Slightly soft centers can get a little smeary in a nice way, but fully hard-boiled is tidiest.
- Cucumber: This is the secret for keeping the mixture fresh. If your cucumber is very watery, pat the dice dry with a paper towel.
- Red onion + cilantro: They add bite and brightness. If raw onion is too sharp for you, rinse the diced onion under cold water and drain well.
- Mayo + Dijon: Mayo makes it creamy; Dijon adds tang. Start small—you can always add more after tasting.
Kitchen Tools Needed
- Small pot (for boiling eggs)
- Mixing bowl
- Fork or potato masher
- Cutting board and knife
- Spoon
- Toaster (or pan) for the sourdough
Step-by-Step Instructions
-
Hard-boil the eggs (if not already done).
Place eggs in a small pot, cover with cold water, bring to a boil, then reduce to a gentle simmer for 10–11 minutes. Cool in cold water, peel, and chop. -
Mash the avocado.
Cut the avocado, scoop the flesh into a mixing bowl, and mash with a fork until mostly smooth with a few small chunks. -
Add the mix-ins.
Add the drained tuna, chopped boiled eggs, diced cucumber, diced red onion, and chopped cilantro to the bowl. -
Season and bind.
Add Dijon mustard, garlic flakes, mayonnaise, and a pinch of salt. Stir gently until everything is evenly combined. (I like folding instead of aggressively stirring so the egg stays in pieces.) -
Adjust texture and taste.
Mash once or twice more if you want it a bit more spreadable, but keep it slightly chunky. Taste and add more salt, cilantro, or a tiny extra dab of Dijon if it needs brightness. -
Toast and serve.
Toast the sourdough slices until crisp at the edges. Spread the avocado tuna mixture generously over each slice and serve right away.
Pro Tips
- Drain your tuna very well to avoid a loose, watery spread—press it lightly in the can with a fork.
- Pat the cucumber dry if it seems especially juicy; it keeps the spread thicker and helps leftovers hold up better.
- Dice the onion small so you get flavor without big raw bites.
- Toast the bread more than you think you need. A sturdy crunch keeps the toast from getting soggy under the creamy topping.
- Season after mixing. Tuna brands vary a lot in saltiness, so it’s easier to control if you taste at the end.
Healthier or Lighter Swaps
- Use Greek yogurt instead of mayo (same amount) for a lighter, tangier spread.
- Choose water-packed tuna and reduce mayo to 1–2 teaspoons (5–10 g) if you want it less rich.
- Add extra cucumber (or even chopped celery if you have it) to boost crunch and stretch the portion without making it heavier.
- Serve on whole grain toast for more fiber, or serve the spread over sliced tomatoes/cucumber for a lower-carb option.
Common Mistakes
- Using an under-ripe avocado: it won’t mash well and the flavor won’t be as creamy and mellow.
- Over-mashing the whole mixture: it turns pasty and loses the nice texture contrast.
- Not draining tuna (and not drying cucumber): the spread gets runny and can soak the toast quickly.
- Over-salting before tasting: tuna and mayo already bring saltiness—start small.
Variations
- Spicy version: add a pinch of chili flakes or a small spoon of chopped jalapeño.
- Lemony version: stir in 1–2 teaspoons (5–10 ml) lemon juice for extra brightness (especially good if your avocado is very rich).
- More herb-forward: use a mix of cilantro and parsley if you want it greener and fresher.
- Extra crunch: add diced pickles or capers (go easy—both are salty).
Serving Suggestions
- Classic: piled onto toasted sourdough with extra cilantro on top.
- More balanced plate: serve with fresh fruit or a simple side salad to lighten the meal.
- Snack-style: scoop with cucumber rounds, bell pepper strips, or whole-grain crackers.
- Lunch option: use it as a sandwich filling with lettuce and tomato (toast the bread first if packing ahead).
Storage Instructions
Store the spread in an airtight container in the fridge for up to 1 day for best color and texture (avocado browns and cucumber releases water over time). Press a piece of plastic wrap directly onto the surface to slow browning.
If you’re meal-prepping, prep the chopped cucumber/onion/cilantro and boil eggs ahead, then mash and mix with avocado just before eating.
Reheating Tips
This recipe is best eaten cold or at room temperature. Reheating isn’t recommended—the avocado and egg texture can turn unpleasantly oily or sulfur-y when warmed.
Nutrition Estimate
Per serving (makes 2 servings, 1 toast each): about 430 calories, 24 g protein, 30 g carbs, 24 g fat.
Values are estimates and will vary depending on bread size, tuna type, and how much mayo you use.
Recipe Summary
- Prep Time: 10 minutes
- Cook Time: 12 minutes (for boiling eggs, if needed)
- Total Time: 22 minutes
- Servings: 2
- Cuisine: American