Butter & Season Bread: Lightly butter all slices of bread with 3tbs melted butter. Sprinkle one side with everything bagel seasoning on each piece. Bake for 10-15 minutes or until bread is toasted & lightly golden, but not completely crisp.
Cook Bacon & prep ingredients: In a large skillet, cook bacon on medium until fat is rendered and bacon is crisp. This should take abotu 10 minutes. Flip halfway through. Drain on double lined paper towel. Cut avocado & tomato in 1/4 inch slices. Make herby basil mayo by roughly chopping the basil and adding chives & basil to the mayo. Mix to incorporate. If using lemon, squeeze it over the avocado & sprinkle with salt & pepper.
Assemble: Spread heaping scoop basil mayo across one seasoned side of sourdough. Layer the lettuce, tomato, bacon and then avocado. Top with another piece of toasted sourdough (seasoned side up). Slice in half and serve right away.
Notes
Home Cook's Tip: *I love the fatty-ness of the acovoado in a BLT and with the mayo, but the lemon juice seasons the avocado and balances it really well. It's option if you don't want to buy an entire lemon for this, I understand, but I think it's well worth it.*Other herbs would work well too! I think this would be delicious with dill.