1. For the spread, place the cream cheese, goat cheese, garlic, thyme, parsley, 5 tablespoons milk, salt, and pepper in the bowl of an electric mixer fitted with the paddle attachment. Beat on medium speed until well mixed. Add an additional tablespoon of milk if the spread is very thick.
2. To make the sandwiches, spread each slice of bread with the goat cheese spread. Slice the cucumber in thin rounds and arrange on half the bread slices. Top with the remaining bread. Press slightly, trim off the crusts, and cut the sandwiches into halves, thirds, or triangles.
3. Per Serving: Calories: 269; Total Fat: 13 grams; Saturated Fat: 8 grams; Protein: 14 grams; Total carbohydrates: 23 grams; Sugar: 7 grams; Fiber: 2.5 grams; Cholesterol: 33 milligrams; Sodium: 636 milligrams