Press dough into a greased pan. Cover loosely with plastic wrap and a cloth towel. Let rise in a warm place (80–85°F) until light and doubled in size, 45–60 minutes.
In a small bowl, combine flour, brown sugar, and cinnamon. Mix well. With a pastry blender or fork, cut in butter until the mixture is crumbly. Stir in nuts.
Heat oven to 375°F. Uncover dough. Sprinkle the brown sugar mixture over the dough.
“Streusel Coffee Cake,” Pillsbury Complete Cookbook: Recipes from America’s Most Trusted Kitchens (New York, NY: Clarkson Potter/Publishers, 2000), 59.