Preheat oven to 300 degrees. Spread 1 1/2 cups coarsely chopped walnuts on baking sheet. Bake for 8 minutes, stirring occasionally. Remove from oven and set aside.
Heat oven on 325 degrees. Spray a 15"x10"x1" cake pan with baking spray with flour. In large mixing, bowl, combine all ingredients except the walnuts With an electric mixer, beat on low speed 30 seconds. Scrape the bowl and on medium speed, beat another 1 1/2 minutes. Stir in 3/4 cup walnuts. Spread batter in pan. Bake for 24 minutes or until toothpick inserted in center comes out clean. Cool cake completely.
Beat cream cheese and butter until fluffy. Gradually, beat in the powdered sugar one cup at a time. Add vanilla and almond extracts and 2 Mini Moos or 1 tablespoon heavy cream. If mixture is too thick, add more cream to reach desired consistency. Spread frosting on cake. Sprinkle top with toasted walnuts. Store cake in refrigerator.