Preheat your oven to 300°F (150°C).
In a small bowl, combine the smoked paprika, garlic powder, onion powder, sea salt, and black pepper to create a dry rub.
Pat the baby back ribs dry with a paper towel and apply the dry rub evenly to both sides of the meat.
Wrap the seasoned ribs tightly in a double layer of aluminum foil and place them on a baking sheet.
Bake the ribs in the oven for 2 hours until the meat is tender and starts to pull away from the bone.
While the ribs bake, whisk together the tomato paste, maple syrup, apple cider vinegar, and Dijon mustard in a small saucepan over low heat until smooth and slightly thickened.
Carefully open the foil, brush the ribs generously with the maple-tomato glaze, and return them to the oven under the broiler for 3 to 5 minutes until the glaze is bubbly and caramelized.
Steam the green beans in a small amount of water for 4 to 6 minutes until they are bright green and crisp-tender.
Serve the sticky ribs immediately alongside the fresh green beans.