1-Preheat the oven to 400°F: Preheat the oven to 400°F. Line a baking sheet with parchment paper.
2-Brush one side of each of the: Brush one side of each of the bread slices with the melted butter and arrange them on the baking sheet buttered side up. Toast the bread until golden brown and crispy, about 5 minutes.
3-Remove the toasts from the oven and: Remove the toasts from the oven and let them cool completely.
4-In the bowl of a stand mixer: In the bowl of a stand mixer fitted with the paddle attachment, beat together the cream cheese and Nutella until smooth. (Alternately, use a bowl and handle mixer.)
5-Spread the Nutella mixture atop the toasts: Spread the Nutella mixture atop the toasts then top with the diced strawberries. Garnish with the toasted walnuts and serve.