Preheat the oven to 375 degrees F.
Peel the sweet potatoes and add the flesh to a bowl. Beat in the butter using a hand mixer or a stand mixer with the whisk attachment until well combined. Beat in the cream cheese, brown sugar and eggs, adding one at a time. Taste and add salt and pepper as necessary.
For the topping: Mix together the brown sugar, pecans, flour, butter and bacon in a separate bowl until it looks crumbly.
Add the mixture to a deep-dish pie plate and bake until puffed and golden, 30 minutes. Let rest for 10 minutes before serving (the souffle will fall slightly).