Combine the broccoli florets, minced garlic, diced onions, and water together in a large skillet over medium heat. Let the ingredients cook in the skillet for at least 15 minutes, tossing every few minutes with a wooden spoon.

When the broccoli is tender, transfer the ingredients to a blender and pulse on high until you get a homogeneous purée (scrape down the sides as needed).

In the meantime, grease the same skillet with a bit of olive oil, and place the scallops in a single layer. Sear them over medium heat for 3 minutes on each side until they are cooked throughout.

Divide the broccoli mash between 2 plates, and top with the seared scallops.

Squeeze a bit of fresh lemon juice over the scallops and add salt and pepper to taste.