Place milk and Nutella in a blender. Blend until smooth.
Place strawberries into molds. (You can also use paper cups and popsicle sticks.) I was purposeful and careful in placing them up against edges. But if looks or placement don't matter, then just dump them in. Just an FYI: If you don't that all the berries will be at the top though.
Carefully pour Nutella/milk mixture into popsicle molds.
Freeze for at least 4-6 hours. Carefully run warm water over the popsicle molds or cups for about 10-15 seconds. They should pull out easily. If not let them sit for 2-3 minutes and try again.