Blanch the Beans - Add 3 quarts of water and 1 teaspoon salt to a large pot. Heat over high heat until boiling. Add the green beans and cook for 2 minutes.
Chill the Beans - Add 1 quart of water and ice to a large bowl. Drain the beans and transfer them to the ice water. Chill in the ice bath for at least 5 minutes, then drain well.
Cook the Alliums - Heat a large skillet over medium heat, then add the olive oil. Add the onions and garlic and sauté for 3 minutes or until tender, being careful not to burn the garlic.
Add the Beans and Seasonings - Add the green beans to the pan and stir. Add orange zest and juice, ⅛ teaspoon salt, and ⅛ teaspoon pepper, and sauté for 2 minutes. Season with more salt and pepper as desired.
To Serve - Serve beans topped with almonds.
Notes
Toast the Almonds: For a more fragrant topping, toast the almonds in a pan over medium heat, shaking the pan occasionally until lightly golden brown.
Storing: Refrigerate in an airtight container for up to 5 days.