Microwave your cream cheese 10 seconds at a time until it's soft and melted but not steaming. Add egg, oil and dill into cream cheese and mix until well combined.
In a separate bowl combine spinach, feta and bacon. Pour your cream cheese mixture on top and season with salt and pepper. Use a fork to mix and combine it together.
Cut pastry sheet into 9 squares. Line muffin pan with your cut squares (you might need to stretch them out a little). Press into the bottom of the muffin cups. Evenly divide the spinach among the cups. Bring your 4 pastry points together, covering the filling, and press them together. Lightly brush with the melted butter
Bake at 400 degrees about 20 minute until golden and puffy. Allow to cool for 10 minutes then use a knife around the edges to loosen and help pop them out.