In a small bowl, whisk together the olive oil, soy sauce, honey, garlic, and lemon juice.
2 tbsp olive oil, 1/4 cup soy sauce, 2 tbsp honey, 2 cloves garlic, 1 tbsp lemon juice
Place the salmon fillets in a large zip-top bag or shallow dish and pour the marinade over them. Seal the bag or cover the dish and refrigerate for at least 30 minutes, preferably 1-2 hours.
4 large salmon fillets
Bring a large pot of salted water to a boil. Add the potato chunks and cook until tender, about 15-20 minutes.
4 large Russet potatoes
Drain the potatoes and return them to the pot. Add the butter and milk, and mash until smooth. Season with salt and pepper to taste. Keep warm.
4 tbsp unsalted butter, 1/2 cup milk, salt, pepper
Preheat the oven to 375°F (190°C). Place the marinated salmon fillets on a baking sheet lined with parchment paper.
Bake for 15-20 minutes, or until the salmon is cooked through and flakes easily with a fork.
While the salmon is baking, heat a large skillet over medium-high heat. Add 1/2 of olive oil.
2 tbsp olive oil
Add the sliced bell peppers to the skillet and sauté for 5-7 minutes, until they are tender and slightly caramelized. Season with salt and pepper to taste and transfer to a plate.
2 medium red bell peppers, 2 medium yellow bell peppers
In the same skillet, add the remaining tablespoon of olive oil and the baby spinach. Sauté for 2-3 minutes, until wilted. Season with salt and pepper.
4 cups baby spinach
On each plate, place a serving of mashed potatoes and top with a portion of sautéed spinach.
Add a baked salmon fillet on top and garnish with the pan-fried bell peppers.