Wash the greens and place in a large bowl.
In a small bowl, whisk the garlic into the lemon juice. Stir in the sea salt and lemon zest. Whisk in the olive oil until it’s emulsified into a vinaigrette.
Pour half the dressing over the spinach and toss well.
In a large skillet over medium heat, heat the olive oil and add in the onion, cooking until translucent and slightly caramelized, about 8 to 10 minutes. Add in the apples, and cook until softened, about 5 minutes. Toss in the pumpkin seeds to warm.
Add the onion-apple-pumpkin seed mixture to the spinach. Add the rest of the vinaigrette and more salt if desired. If using, sprinkle the crumbled goat cheese over the top. Serve and enjoy!