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Tall avocado BLT sandwich with grilled sourdough bread, crispy bacon, fresh lettuce and tomato on wooden board

Avocado BLT Sandwich

BLT sandwich loaded with 6 slices of crispy bacon, ripe sliced avocado, juicy steak tomato, and butter lettuce on avocado-oil-toasted brioche bread. The tomato and avocado get seasoned with lemon pepper for added brightness, and a thick swipe of mayo on both sides of the bread prevents sogginess.
Prep Time 10 minutes
Cook Time 15 minutes
Total Time 25 minutes
Servings: 2 sandwiches
Course: Lunch, Main Course
Cuisine: American

Ingredients
  

Bread & Spread
  • 4 slices brioche sandwich bread
  • avocado oil spray for toasting
  • 4 tbsp mayonnaise
Fillings
  • 12 slices bacon cooked crispy
  • 4 leaves butter lettuce
  • 1 large steak tomato sliced into 1/4-inch slices
  • 1 avocado peeled, halved, and sliced
  • lemon pepper seasoning to taste, for tomato and avocado

Equipment

  • Skillet, Griddle, or Sheet Pan
  • Sharp chef's knife
  • Cutting Board
  • Tongs
  • Serrated Bread Knife (for slicing)

Method
 

Cook and Toast
  1. Cook the 12 slices of bacon in a skillet, on a griddle, or on a sheet pan in a 400°F oven until crispy. Drain on paper towels and set aside.
  2. Lightly spray both sides of each brioche slice with avocado oil. Heat a skillet or griddle to medium-high (about 350°F) and toast the brioche for 90 seconds to 2 minutes per side until evenly golden brown.
Slice and Season
  1. Slice the steak tomato into quarter-inch slices. Peel, halve, and slice the avocado. Season both with lemon pepper on all sides.
Build and Serve
  1. Spread a tablespoon of mayonnaise on the inside of each of the 4 toasted brioche slices.
  2. Build each sandwich on a mayo-coated bottom slice in this order: 2 leaves of butter lettuce, half the seasoned tomato slices, 6 slices of crispy bacon, half of the sliced avocado. Top with the second mayo-coated brioche slice.
  3. Press down lightly to compress the layers without crushing the avocado, then slice each sandwich in half diagonally with a serrated knife. Serve immediately.

Notes

Season Both Tomato and Avocado: Most BLT recipes only season the tomato. Hitting the avocado with lemon pepper too adds a second layer of citrus brightness that cuts through the bacon and mayo richness.
Avocado Oil Spray Over Butter: Butter burns at around 250°F. Avocado oil has a smoke point above 500°F, so the brioche toasts faster and more evenly without scorching. The oil also keeps the avocado flavor consistent across the sandwich.
6 Slices of Bacon per Sandwich: Standard BLTs use 2 to 3 slices. The 6-slice stack is what makes this version a loaded BLT. The bacon ratio against the bread, lettuce, and tomato is what creates the proper crispy crunch in every bite.
Mayo Goes on the Bread: Spreading mayo directly on the toasted brioche (not on the lettuce or tomato) creates a moisture barrier that prevents the bread from going soggy from tomato juice in the 5 to 10 minutes between assembly and eating.
Layer Order Matters: Lettuce sits on the mayo to anchor the stack. Tomato goes on the lettuce so its juice doesn't touch the bread. Bacon stacks above the tomato to lock everything in place. Avocado finishes the stack because it's the most delicate filling.

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