Preheat the oven to 350°F (177°C) and grease a 9×13-inch baking pan or line with parchment paper. Set aside. Make the crumb topping: Mix the brown sugar, granulated sugar, cinnamon, and salt together in a medium bowl. Stir in the melted butter. Using a fork, lightly mix in the flour until crumbles form.
Reduce the oven temperature to 325°F. In the bowl of a clean food processor, combine ⅓ cup of sugar with the lemon zest. Pulse until the sugar is pale yellow and the zest is broken down. Transfer the lemon sugar to a 2-cup measuring cup with a spout. Whisk in the remaining 1 cup of sugar and the flour.Preheat the oven to 350°F (177°C). Grease a 9-inch square or 9-inch springform baking pan (or any 2.5 quart baking dish) with nonstick spray. Set aside. Make the crumb topping first: In a medium bowl, whisk the flour, brown sugar, and cinnamon together. Cut in the cold butter using a pastry blender or a fork.
For the Jumbo Blueberry Muffins: Preheat oven to 400 degrees (F). Spray a 6 mold jumbo muffin tin with non-stick spray; set aside. In a large bowl, sift together 3 cups of the flour, baking powder, nutmeg, cinnamon, and salt; set aside. In a large bowl using an electric mixer, or in the bowl of a stand mixer fitted with the paddle attachment
Bake: Bake the cream cheese pound cake at 325°F (163°C). Halfway through baking, loosely tent the cake with aluminum foil to prevent over-browning. Cool, then invert: Let the pound cool for about 2 hours in the pan, then invert onto a serving plate and cool completely before serving.qdJM.