Preheat the oven to 425°F (220°C).
If using fresh spinach, wilt it in a pan with olive oil and garlic for 2 to 3 minutes. If using frozen, squeeze it dry.
Season the spinach and spread it evenly across the bottom of a baking dish.
Pat the anchovies dry and arrange them in a single layer on top of the spinach.
Whisk together the honey, garlic, olive oil, lemon juice, and a pinch of salt.
Drizzle the honey-garlic mixture evenly over the anchovies.
Bake 10 to 12 minutes, until just cooked through and the glaze turns golden at the edges.
Scatter fresh parsley over the top and serve immediately.