Add the green beans and blanch them for 1-2 minutes (I used haricot verts; if you use green beans, blanch for 2-3 minutes), until tender but still crisp.
Drain the green beans and then dunk them immediately into a bowl of ice water to stop the cooking process and preserve their bright green color.
Place the cooled, drained beans on paper towels to remove excess water.
To make the gremolata, combine the garlic, lemon zest, parsley, Parmesan, and pine nuts in a small bowl and set aside.
Heat the olive oil in a large skillet over medium-high heat. Add the beans to the hot skillet and season with sea salt and freshly cracked pepper to taste. Cook, stirring often, for 2 minutes, until coated with olive oil and heated through.
Place the green beans on a serving platter, then sprinkle with the gremolata. Serve immediately. Enjoy.