Christmas Almond Toffee

Ingredients (8)

• 1 tablespoon plus 2 cups butter, divided
• 2 cups sugar
• 1 cup slivered almonds
• 1/4 cup water
• 1 teaspoon salt
• 1 teaspoon vanilla extract
• 1 package (11-1/2 ounces) milk chocolate chips, divided
• 1/2 cup finely chopped almonds