Try this dip with sliced green apple, toasted rustic bread, or crackers.
Preheat oven to 350 degrees. Put pecans, butter, brown sugar, 1 teaspoon salt, and 1/4 teaspoon cayenne pepper into a medium bowl; toss to combine. Spread in a single layer on a rimmed baking sheet. Bake until fragrant and sugar has melted, about 5 minutes. Let cool completely.
Process cream cheese, cheddar, and cream in a food processor until well combined. Transfer to a medium bowl. Stir in scallions, remaining 1/2 teaspoon salt, and remaining pinch of cayenne.
Spoon cheese mixture into 2 round baking dishes (6 to 7 inches in diameter and about 1 inch deep). Arrange glazed pecans on top. Bake until dip is just heated through, about 10 minutes.