To Bake the Bacon: Preheat the oven to 400℉ (200℃) and line a rimmed baking sheet with foil and place a wire cooking rack on the baking sheet. Evenly space the bacon out on the prepared pan and bake for 15-18 minutes or until the bacon is crispy and browned. Once cool enough to handle, chop or break into bite-sized pieces.
Prepare Dressing: While the bacon is baking, mix together the ¼ cup buttermilk, with ¾ cup mayonnaise, 1 teaspoon dried parsley, ½ teaspoon dried dill, ½ teaspoon garlic powder, ¼ teaspoon kosher salt, ⅛ teaspoon black pepper, and ⅛ teaspoon dried basil and mix well. If needed, add additional buttermilk,1 tablespoon at a time, to thin.
Assemble. In a large serving bowl or mixing bowl, combine the prepared lettuce with ¼ cup of the dressing to combine. Add the tomatoes, bacon, chives, and croutons and toss again. Serve immediately with the additional dressing on the side.
Notes
Mayonnaise: Feel free to swap it out for sour cream or plain Greek yogurt. Buttermilk: In place of buttermilk, use ¼ cup milk of any variety mixed with 1 teaspoon lemon juice or white vinegar. Tomatoes: Choose any ripe, fresh tomato you like. Cherry or grape tomatoes are great options to use year-round with consistently good flavor. If using vine-ripened tomatoes, it is best to deseed them and chop them into bite-size pieces. Ranch Seasoning: In place of dried seasonings, use 1 tablespoon of ranch seasoning mix. Dressing: Leftover BLT salad dressing can be stored in an airtight container in the refrigerator for up to 5 days.