Combine pine nuts and butter; spread on a baking sheet. Bake at 350° for 4-6 minutes until golden brown, stirring once. Cool on a wire rack. In a large bowl, combine romaine and blue cheese. Add apples and pine nuts.
In a food processor or blender, combine the lemon juice, brown sugar, garlic, salt and pepper; cover and process until smooth. While processing, gradually add oil in a steady stream. Drizzle over salad and toss to coat. Serve immediately.
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