Preheat oven to 425°F.
Add the Farmer John sausage links to a large skillet over medium-high heat. Cook, turning occasionally, until warmed through.
Remove to a plate, leaving a little bit of the sausage grease in the pan.
Crack eggs into a bowl and add a splash of water or milk. Whisk well with a fork and then add to the pan.
Season with salt and pepper. Cook for a few minutes, tossing and scrambling as they cook. (If using spinach, add it to the pan about 2 minutes before the eggs are done cooking.) Remove from heat.
Warm the tortillas on a hot skillet or griddle for a few seconds until they are pliable.
Divide the scrambled eggs among the tortillas and top with shredded cheese.
Place a sausage link on top. Roll up and place, seam side down, on a baking sheet lined with foil or parchment paper.
Spray lightly with cooking spray and bake for 10-15 minutes or until golden brown. Serve with salsa for dipping.