Grease and line a 9” round cake pan with parchment paper.
In large mixing bowl cream the 1/2 cup unsalted butter, softened and 1 cup granulated sugar until light, about 2 minutes. Add 2 large eggs, one at a time. Mix in the 1 tsp amaretto liqueur or flavor.
Sift or whisk the 1 1/3 cup all-purpose flour, 1 1/4 tsp baking powder and 1/4 tsp salt together. Add to butter mixture, alternating with the 1/2 cup full fat sour cream in two different batches, mixing only until combined.
Spread 2/3 of the batter into prepared cake pan; 1 1/2 cups cherry pie filling, on top of the batter; dollop the remaining batter on top of the cherry pie filling.
Bake 45-50 minutes at 350°F, until the edges are a light golden brown and a toothpick inserted in the center comes out with only a few crumbs.
Allow to cool on a wire rack; allow to cool in pan 15-20 minutes before removing cake from the pan to finish cooling on a wire rack.
When ready to serve, remove parchment paper from the bottom of the cake. Combine the ingredients for the glaze (1 cup powdered sugar, 1/4 tsp amaretto liqueur or flavor and 2-3 teaspoons water) and stir until drizzling consistency. Drizzle glaze over the top of the cooled coffee cake; sprinkle with toasted, sliced almonds .