* 10 tablespoons unsalted butter, room temperature, plus more for pans
* 6 tablespoons sliced almonds
* 1/3 cup coarsely chopped almonds
* 5 tablespoons packed light-brown sugar
* 1 teaspoon ground cinnamon
* 1/8 teaspoon freshly grated nutmeg
* 1 1/2 cups all-purpose flour
* 1 teaspoon baking powder
* 1/2 teaspoon baking soda
* 1/4 teaspoon salt
* 3/4 cup granulated sugar
* 1 large egg
* 1 tablespoon pure vanilla extract
* 3/4 cup sour cream, or plain yogurt
* 2 cups sifted confectioners' sugar
* 3 to 4 tablespoons milk
1. Preheat oven to 350 degrees. Generously butter six mini Bundt pans; set aside. Spread sliced almonds out on a baking pan, and toast until golden brown. Transfer nuts to a bowl to cool.
2. In a medium bowl, combine chopped almonds, light-brown sugar, cinnamon, and nutmeg; set aside. In another medium bowl, sift together flour, baking powder, baking soda, and salt; set aside.
3. In the bowl of an electric mixer, combine 6 tablespoons butter and granulated sugar. Beat on medium speed until light and fluffy, about 3 minutes. Add egg; beat until combined. Add 1 teaspoon vanilla, and beat until smooth. Add 1/3 of reserved flour mixture and half of sour cream; beat to combine. Repeat. Add final third of flour mixture, and beat to combine.
4. Fill each Bundt pan with 3 tablespoons batter, and spread evenly with a small offset spatula or spoon. Sprinkle each with 2 tablespoons of reserved almond-spice mixture. Top with additional 3 tablespoons batter; the batter should come to within 1/2 inch of the rims of the pans.
5. Bake until cakes are golden brown and a cake tester inserted into the center comes out clean, about 20 minutes. Transfer cakes to a wire rack to cool completely. Unmold cakes. Place cakes, flat sides down, on a wire rack placed over a baking pan.
6. Melt remaining 4 tablespoons butter over medium-high heat until color turns nut brown, about 5 minutes. Pour butter into a medium bowl, leaving behind any dark sediment. Stir in confectioners’ sugar, remaining 2 teaspoons vanilla, and 3 tablespoons milk until smooth; add an additional tablespoon milk, if necessary, so glaze is pourable. Drizzle glaze over cakes, and sprinkle with toasted almonds. Serve.