In the bowl of an electric mixer fitted with the paddle attachment, beat butter, sugar, and salt on medium speed until light and fluffy, about 3 minutes. Add 1 tablespoon of honey and egg yolk, then add eggs, one at a time, beating to combine after each. Add flour and mix just to combine.
Fold pear and all but 2 tablespoons of the nuts into batter and pour into prepared pan. Smooth with spatula and sprinkle with remaining nuts. Bake until a cake tester inserted in center comes out clean, about 40 minutes. Remove from oven and cool on rack. Drizzle with remaining tablespoon of honey.