For the sauce: Melt the butter in a large suate pan over high heat and add in the sausage and cook until browned and cooked through out. Bread up the sausage into small chunks using a spoon.
Next, sprinkle on some flour and mix it in to the sausage until it is incorporated.
Pour in the milk and turn the heat down to medium-high and cook for 2 to 3 minutes until it gets thick, think alfredo sauce.
Whisk in the pepper jack cheese until its completely combined, season with salt and pepper and keep warm.
For the pico de gallo: Combine the tomatoes, red onions, jalapeño, lime juice, chopped cilantro leaves, salt and pepper to a bowl and mix.
To make the poutine: Place the cooked fries on a sheet pan and pour on some of the spicy sausage gravy. Top off with several tablespoons of the pico de gallo, sliced black olives, sliced green onions, cilantro leaves and small chunks of pepper jack. Serve warm!