"Adjust the ingredient measurements for a low carb cinnamon coffee cake recipe originally for a 9x9 inch pan to fit a 13x9 inch pan by scaling all ingredients by 1.44. Original ingredients: 6 tablespoons unsalted softened butter, 3/4 cup granulated allulose sweetener, 3 large eggs, 1/4 cup heavy cream, 3 cups almond flour, 2 teaspoons baking powder. Streusel topping: 1 1/2 cups almond flour, 3/4 cup brown allulose sweetener, 1 1/2 tablespoons cinnamon, 1/8 teaspoon kosher salt, 1/4 cup unsalted melted butter, 1/4 teaspoon vanilla extract."