Crispy Bacon BLT with Creamy Mustard Mayo Sauce
Classic bacon, lettuce, and tomato sandwich with creamy avocado and a tangy mustard-mayo sauce that brings together sour cream, mayonnaise, and yellow mustard. The thick-cut bread gets buttered and golden-toasted for extra richness, while oven-baked bacon ensures perfect crispiness. Perfect for lunch or a satisfying dinner, this version stands out with its generous avocado slices and signature sauce that adds depth beyond traditional mayo.
Ingredients
- 8 slices bread, cut 1/2 inch thick
- 1 ½ Tbsp unsalted butter, to toast the bread
- 12 slices bacon, regular sliced
- 2 large ripe tomatoes, thickly sliced
- 4 green lettuce leaves, rinsed and spun dry
- 1 large avocado, pitted, peeled and sliced
- salt, to taste(optional)
- black pepper, to taste(optional)
- ½ cup real mayonnaise
- 2 Tbsp sour cream
- 2 tsp yellow mustard
Instructions
- 1
Preheat oven to 400 degrees F and place bacon on foil-lined baking sheet in single layer
- 2
Bake bacon for 15 to 20 minutes until browned and crisp, then transfer to paper towel-lined plate to cool
- 3
Combine mayonnaise, sour cream, and yellow mustard in small bowl and set aside
- 4
Lightly butter both sides of bread slices and toast on dry griddle or skillet over medium-high heat until golden brown
- 5
Arrange 4 slices of bread on cutting board and spread 1 tablespoon sauce over each toast
- 6
Layer lettuce, then tomato, bacon, and avocado on sauced bread
- 7
Sprinkle salt and pepper over avocado
- 8
Spread 1 tablespoon sauce over remaining toasted bread and place over sandwich sauce side down
- 9
Cut in half if desired and serve
Tips
Use thick-cut bread for better structure and buttering both sides creates golden, crispy toast that holds up to the fillings.
Bake bacon in the oven for even cooking and less mess than stovetop frying, plus you can cook all slices at once.
Make the sauce ahead of time to let flavors meld, and store extra sauce in the fridge for other sandwiches.
Good to Know
Assembled sandwiches best eaten immediately. Store sauce covered in refrigerator for up to 3 days.
Cook bacon and make sauce up to 2 days ahead. Toast bread and assemble just before serving.
Serve immediately while toast is warm and crisp. Cut diagonally for easier handling.
Common Mistakes
Toast bread just before assembling to avoid sogginess from sauce and tomatoes.
Pat tomatoes dry with paper towels to prevent sandwich from becoming watery.
Don't skimp on the sauce - it's what makes this BLT special.
Substitutions
Vegan Options
Gluten-Free Swaps
General Alternatives
FAQ
Can I make the sauce ahead of time?
Yes, combine the mayonnaise, sour cream, and mustard up to 3 days ahead. Store covered in the refrigerator and stir before using.
What if I don't have a griddle for toasting?
Use a regular skillet or even toast the buttered bread in a 375F oven for 3-4 minutes per side until golden brown.
How long will leftover bacon keep?
Cooked bacon stays fresh in the refrigerator for 4-5 days. Reheat gently in microwave or dry skillet before using.