People pay $30 for this at restaurants. You’re making it for six bucks. The Classic BLT Sandwich — bacon, lettuce, tomato, mayo, proper bread — is one of the greatest sandwiches in existence, and its greatness comes from simplicity executed perfectly. There’s nowhere to hide in a three-ingredient sandwich. Every component has to be right. The bacon needs to be perfectly crisp, not limp and not shattered into dry shards. The tomato needs to be ripe and in season, thickly sliced. The lettuce needs to be cold and crisp. The mayo — real mayo, not salad dressing — needs to be spread generously on both slices. Toast the bread. That’s the whole recipe. But within that simplicity lives a world of technique.
The BLT is only as good as its worst component. Underripe tomato, limp bacon, or iceberg instead of a proper crispy lettuce — any one of these can ruin it. This version fixes all of that. Peak summer BLT, made correctly.
Why This Classic BLT Works
- Oven bacon: Baking bacon in the oven at 400°F on a rack produces perfectly flat, evenly crispy strips every time without splatter and without constant watching. Superior to pan-frying for sandwich bacon.
- Ripe, in-season tomatoes: This is the whole sandwich. A ripe beefsteak or heirloom tomato, thickly sliced and salted, is the reason the BLT exists. Out-of-season tomatoes make a forgettable sandwich; peak tomatoes make the best sandwich of summer.
- Toasted bread: Toast that’s golden and still warm from the toaster. Not bread that was toasted ten minutes ago and has gone cold and firm. Time the toast to be ready when the bacon is done.
- Mayo on both slices: Both inside faces get mayo. This creates a moisture barrier that slows the tomato from wicking into the bread, and provides richness on every bite regardless of where you bite into it.
- Salting the tomatoes: A small pinch of salt on the tomato slices immediately before building the sandwich draws out their juices and intensifies their flavor.
Ingredients
Classic BLT (serves 2)
- 6–8 strips thick-cut bacon
- 1 large ripe beefsteak or heirloom tomato, thickly sliced (¼ inch)
- 4 large leaves romaine or crispy iceberg lettuce
- 4 slices good white sandwich bread or sourdough
- 3–4 tbsp real mayonnaise (Hellmann’s, Duke’s, or homemade)
- Salt and black pepper for the tomatoes
Instructions
Step 1: Cook the Bacon
Preheat oven to 400°F. Line a rimmed baking sheet with foil and place a wire rack on top. Lay bacon strips on the rack in a single layer — don’t overlap. Bake 15–20 minutes until the bacon is deeply browned and crispy throughout. The rack allows fat to drip away and hot air to circulate completely around each strip, producing perfectly flat, evenly crisp bacon. Remove and drain briefly on paper towels. The bacon will continue to crisp as it cools.
Step 2: Prep the Tomatoes and Lettuce
Slice tomatoes about ¼ inch thick — thick enough to have presence in the sandwich. Set aside on a plate. Keep lettuce cold in the refrigerator until the last possible moment. Cold, crispy lettuce is essential to the textural experience of a BLT — warm or wilted lettuce undermines the whole thing.
Step 3: Toast the Bread
Toast the bread until golden and warm — time this to be ready when the bacon is done. Spread mayonnaise generously on one face of each slice while the toast is still warm. The warm bread slightly warms the mayo and helps it spread smoothly and evenly.
Step 4: Build and Season
On the bottom slice, lay crispy lettuce leaves — creating a barrier between the mayo and the tomato. Add tomato slices and season each with a small pinch of salt and a crack of black pepper. Lay the bacon on top in a single layer. Close with the top slice, mayo-side down. Cut diagonally and serve immediately. The BLT waits for no one.
Tips and Common Mistakes
- Out-of-season tomatoes: If the tomatoes aren’t peak ripe, rethink making a BLT. This sandwich exists to showcase summer tomatoes. Off-season, substitute with cherry tomatoes (halved) or roasted tomatoes for a different but respectable result.
- Limp bacon: Pan-fried bacon can be inconsistent. The oven method is more reliable. If pan-frying, cook fully — bacon in a BLT should shatter slightly when you bite it, not fold and pull.
- Too little mayo: Under-dressed BLTs are dry and unbalanced. Spread mayo all the way to the edges of the bread. The mayo is structural here, not just flavoring.
- Wrong bread: Thick-sliced white sandwich bread is the traditional choice. Sourdough adds tang that works beautifully. Avoid soft dinner rolls or ciabatta — both are too unstable for a saucy sandwich like this.
Variations
- BLAT: Add avocado — sliced or mashed. The standard upgrade that millions of people have permanently adopted. The avocado adds creaminess that complements the crispy bacon and acidic tomato perfectly.
- Turkey BLT: Add roasted or smoked turkey breast between the lettuce and tomato. Turns a side dish into a main course without losing any of the classic BLT character.
- BLT with fried egg: A fried egg on top turns the BLT into breakfast territory. One of the best combinations in sandwich history.
- Pesto BLT: Replace or supplement the mayo with Homemade Basil Pesto. The herb-forward richness plays beautifully against the bacon and tomato.
This is the cornerstone of the American lunch canon. Serve alongside the Cuban Sandwich (Cubano), the Egg Salad Sandwich, and the Classic Reuben Sandwich. Don’t forget the Muffuletta Sandwich for the full deli spread.
Storage
- Best fresh: The BLT is designed for immediate consumption. Nothing about it improves after assembly.
- Components separately: Cooked bacon keeps 5 days refrigerated; reheat in the oven for 2–3 minutes at 375°F to crisp back up. Sliced tomatoes keep 1 day covered in the fridge.
- Meal prep: Cook a full package of bacon at once, refrigerate or freeze, and pull out strips for BLTs all week.
Frequently Asked Questions
What kind of mayo is best for a BLT?
Full-fat real mayonnaise. Duke’s is the preferred brand in the American South for its slightly tangier profile. Hellmann’s (Best Foods on the West Coast) is the national standard. Kewpie Japanese mayonnaise adds umami richness. Avoid “salad dressing” (like Miracle Whip) — the sweetness clashes with the savory components of the sandwich.
What’s the best tomato for a BLT?
Beefsteak for size and sliceability. Heirloom varieties (Cherokee Purple, Brandywine) for flavor complexity. Whatever is ripest at the farmers market in peak summer. Cherry tomatoes, halved, work in off-season months when large tomatoes are flavorless. The key word is ripe — this is non-negotiable.
Should I put the lettuce on top or bottom of the tomato?
Lettuce on the bottom (closest to the mayo). This puts the lettuce between the mayo and the tomato, acting as a physical barrier that slows moisture transfer from the tomato to the bread. Lettuce on top means the tomato is directly on the mayo and the bread gets wet faster.
Is it worth making homemade mayo for a BLT?
Yes, if you have the time. Homemade mayo has a rounder, more complex flavor than any bottled version. It takes 5 minutes with an immersion blender. In a simple sandwich where every component is visible, the upgrade is immediately noticeable.
