1. Cook spinach in a medium saucepan according to package directions. Transfer to a strainer to drain off any liquid and set aside.
2. Combine the butter and garlic in the saucepan used to cook the spinach. Cook over medium-low heat until the garlic softens, 2-3 minutes. Stir in the cream cheese, sour cream and Parmesan cheese. Heat 3 to 4 minutes or until cheese is completely melted. Stir in the spinach and artichokes, continue heating 3 to 4 minutes or until hot. Chop 1/2 cup of the almonds, stir into spinach mixture. Transfer to a 9-inch pie plate or a 10-inch tart pan. Top with the remaining 1/4 cup sliced almonds. Serve warm.
To brown top, broil dip for 1 to 2 minutes, if desired.