Step 3
Coat a large nonstick skillet with cooking spray and heat over medium-high heat. Add sausage; cook, crumbling with a wooden spoon, until browned, about 4 minutes. Add mushrooms and water; cook, stirring occasionally and crumbling the sausage more, until it is cooked through, the water has evaporated and the mushrooms are tender, 8 to 10 minutes. Squeeze spinach to remove excess water, then stir into the pan; remove from heat.