Slice the bread into 1-inch cubes. If the bread feels too soft, bake for 10-15 minutes at 300 degrees Fahrenheit until dry and crusty.
In the bottom of the slow cooker bowl, whisk together the eggs, milk, chopped pecans, coconut cream, maple syrup, pumpkin pie spice/cinnamon, vanilla extract and kosher salt.
Slowly add the bread, stirring to soak up the french toast custard as you go. Everything should be well combined and evenly absorbed by the bread. Note: It’s okay if there is a small amount of liquid remaining in the bottom of the slow cooker bowl, but MOST needs to be absorbed by the bread.
Cover and refrigerate the slow cooker bowl overnight.
The next morning, top with the pecan sugar crumb topping. In a small bowl, add the flour, sugar, and cinnamon. Using a pastry cutter or a fork, cut the cubed butter into the flour mixture until a sand-like consistency forms. Fold in the pecans, then sprinkle directly overtop the casserole.
Cook on high for 2-3 hours. Serve immediately with maple syrup and fresh fruit, and a dollop of whipped cream dusted with pumpkin pie spice.