Juicy & Flavorful Turkey Smash Burgers with a “Halfway Homemade” BBQ Sauce

1. Finely chop rosemary, thyme, and sage leaves. Grate one clove of garlic. 
2. In a bowl, combine the ground turkey with the chopped herbs, grated garlic, kosher salt, black pepper, and smoked paprika. Mix well and form into 4 equal-sized balls.
3. For the BBQ sauce: Whisk together ketchup, white vinegar, maple syrup, smoked paprika, kosher salt, and cayenne pepper in a small saucepan. Bring to a simmer over medium heat and simmer until the sauce is reduced by half, stirring occasionally. Set aside.
4. Meanwhile, melt butter in a cast iron or ceramic pan over medium-high heat. Add the whole garlic clove to the melted butter and cook until browned, then remove and discard the garlic clove.
5. Place one ball of the prepared turkey meat in the center of the hot pan and smash it flat with a spatula. Cook for approximately 3 minutes per side. During the last minute of cooking, add a slice of cheddar cheese on top of each burger.
6. While the burgers are cooking, caramelize onions and slice the avocado.
7. Toast the pretzel buns if desired.
8. Assemble the burgers on pretzel buns with the caramelized onions, avocado slices, and a generous dollop of the sweet and spicy BBQ sauce.