Avocado-Bun Turkey Sliders

Preheat oven to 350 degrees F. Coat a large baking sheet with cooking spray.

Combine onion, vinegar, water, sugar and 1/4 teaspoon salt in a small saucepan. Bring to a boil. Remove from heat and let stand for at least 15 minutes. Drain.

Gently mix turkey, cilantro, cumin, 1/2 teaspoon ground chipotle and the remaining 1/2 teaspoon salt in a medium bowl. Form into 6 oval-shaped patties the size of your avocados (about 2 by 3 inches) and place on the prepared baking sheet. Bake until an instant-read thermometer registers 165 degrees F, about 20 minutes.

Meanwhile, stir together mayonnaise and the remaining 1/4 teaspoon ground chipotle in a small bowl.

To assemble, cut a thin slice from the bottom half of each avocado to make it more stable. Top an avocado half with 1 teaspoon of the mayonnaise mixture, about 1 tablespoon of the pickled onion, a burger, 2 tomato slices, lettuce and another avocado half. Sprinkle each slider with sesame seeds.