Nutella ("Hazelnut Spread with Cocoa") advertises itself as a nutritious alternative to butter. Most nut butters are, in fact, good nutritional choices, including hazelnut butter. But Nutella is not that. It is far more palm oil and added sugar than hazelnuts.
Here is how it compares to Butter (basically pure fat) and Adams 100% Natural Peanut Butter (Creamy).
Nutella Butter Adams
Calories (2tbsp) 200 200 190
Saturated Fat 4g 14g 3g
Total Carbs 22g 0g 7g
Added sugar 19g 0g 0g
Total sugar 21g 0g 2g
Sodium 15mg 180mg 105mg
Protein 2g 0g 8g
Fiber 1g 0g 3g
So while spreading your toast with Nutella is probably a better alternative than using butter in some respects, don't confuse it with a healthy nut butter. It is closer to cake frosting.