Step 1

In a small glass bowl, whish together vinegar, sugar and salt. Add in prepared veggies and refrigerate a minimum of 30 minutes or up to two days ahead.

Step 2

Preheat oven to 400 degrees.

Step 3

In a medium bowl, combine all ingredients until just combined. Do not overwork. Form into 4 patties or 1-inch meatballs. Place on parchment lined baking sheet. Bake for 25-30 minutes or until instant read thermometer inserted in the center reads 160 degrees. (Meatballs will require less cooking time, check after 15 minutes).

Step 4

While the burgers cook, combine mayonnaise ingredients in a small bowl and refrigerate.

Step 5

Slice baguette into fourths, then cut each piece in half. Spread insides with spicy mayo. Layer fresh herbs and pickled veggies, then top with burger. Add additional herbs and pickled veggies.