Soften your ice cream slightly. Let it sit at room temperature for 3–5 minutes.
This helps everything blend smoothly without over-thinning the shake.
Warm the Nutella just a bit. Microwave for 10–15 seconds until it loosens. This prevents clumps and helps the chocolate-hazelnut flavor disperse evenly.
Add ingredients to the blender. Start with 1/2 cup milk, then add ice cream, warmed Nutella, vanilla, and a small pinch of salt.
Blend on low, then medium. Pulse to break everything down, then blend until smooth and thick. If the blender struggles, stop and stir with a spatula.
Adjust thickness. For a thicker shake, add a scoop of ice cream or a couple of ice cubes and blend briefly.
For a looser texture, splash in more milk a tablespoon at a time.
Taste and fine-tune. If it’s overly sweet, add a tiny extra pinch of salt. If you want more chocolate, add 1–2 teaspoons extra Nutella and blend again.
Serve immediately. Pour into a chilled glass. Top with whipped cream, chocolate shavings, and crushed hazelnuts if you like.