Place mayo, greek yogurt, lime juice, Adobo Chipotle Pepper Sauce OR 2 Adobo Chipotle Peppers, honey, salt and garlic powder in immersion blender safe container.
On first piece of bread sprinkle thinly sliced red onions about (4-6) 2 inch pieces on top of the chipotle mayo, then 2 slices tomatoes on top of the red onions.