Pat the salmon fillet completely dry with a paper towel and season both sides with salt, pepper, and a bit of fresh lemon zest to neutralize any fishy scent.
In a small saucepan over medium heat, combine the rinsed cannellini beans, minced garlic, and bone broth.
Simmer the beans for 5 minutes, then use a fork or potato masher to crush them into a smooth, creamy consistency.
Heat the olive oil in a non-stick skillet over medium-high heat until shimmering.
Place the salmon in the pan, skin-side down, and sear for 4 to 5 minutes until the skin is golden and crisp.
Flip the salmon and cook for an additional 2 to 3 minutes until the fish is just opaque throughout.
Remove the salmon from the pan and immediately add the fresh spinach to the same skillet, stirring for 1 minute until wilted.
Plate the garlic white bean mash first, layer the spinach on top, and finish with the seared salmon and a generous squeeze of fresh lemon juice.