Smash Burger Bowl with Lemon Pesto Aioli

1. Sauté 1 yellow onion in oil in a cast iron skillet on medium heat until it starts to cook down.
2. Once the onion has cooked down, move it to the side of the pan.
3. In the same pan, increase the heat to medium-high.
4. To make the smash burgers: Roll small balls of ground beef in your hand, add them to the hot pan, and smash them down with a spatula.
5. Cook the patties for a couple of minutes until a crust forms on the bottom. Flip, and cook for the same amount of time on the other side. Season both sides with salt and pepper.
6. While the burgers are cooking, prepare the lemon pesto aioli: Mix mayonnaise with pesto and lemon juice to your desired consistency.
7. To assemble the bowl: Add your favorite lettuce (such as butter lettuce) to the bottom of a bowl.
8. Top the lettuce with the golden sautéed onions, the cooked burger patties, a generous dollop of lemon pesto aioli, and feta cheese.
9. Finish off with some fresh dill if desired.