Preheat your oven to 300°F.
In a small bowl, combine the smoked paprika, garlic powder, sea salt, and black pepper.
Rub the spice blend thoroughly over all sides of the beef brisket.
Place the brisket in a small baking dish, cover tightly with foil, and roast for 3 hours until the meat is tender.
While the brisket rests, peel and thinly slice the yellow onion.
Heat the ghee in a skillet over medium-low heat and add the sliced onions.
Sauté the onions for 15 to 20 minutes, stirring occasionally, until they are deep golden brown and caramelized.
Stir in the apple cider vinegar to deglaze the skillet and incorporate the flavor into the onions.
Steam the green beans for 5 minutes until they are vibrant green and tender-crisp.
Slice the brisket against the grain and serve it topped with the warm caramelized onions and a side of green beans.