Preheat the oven to 350 degrees F and line a baking sheet with foil topped with a sheet of parchment paper.
Cut each strip of the bacon in 6 squares, for a total of 36 squares. Arrange on the prepared baking sheet and bake until bacon is browned and crispy, about 20 minutes. Drain on paper towels.
Discard the foil and parchment paper from the baking sheet. Line with a fresh sheet of parchment paper. Increase the oven temperature to 375 degrees F.
Roll out or pat the crescent dough on a lightly floured work surface in a rectangle about 1/4 inch thick.
Using a round cutter, cut 72 small circles of the dough. Transfer to the baking sheet.
Brush with the melted butter and sprinkle with the sesame seeds. Bake until crisp and golden brown, about 10-11 minutes. Cool on a wire rack to room temperature.
While the buns are baking, make the basil mayo. Whisk the basil into the mayonnaise in a small dish. Season to taste with salt and pepper. Spread the mayonnaise on the flat toasted side of 36 of the buns; these will be the tops.
To assemble the appetizers, thread one bun toasted size up, one tomato, one lettuce piece, and one bacon piece. Press the top buns on the skewer, mayonnaise side down, and gently press the layers together. Arrange on a platter, serve and enjoy!