Preheat oven to 400°F. Spray 1 qt. casserole dish with nonstick cooking spray.
Heat large nonstick skillet over high heat. Add damp spinach and cook, tossing gently, until wilted, 2 to 3 minutes.
Place half of spinach, in prepared casserole dish. Sprinkle with half Jarlsberg, half Parmesan, half garlic, and half pepper. Top with remaining spinach; sprinkle with remaining cheeses, garlic, and pepper.
Bake on top rack/shelf of oven, until cheeses are melted and bubbly, 20 minutes. Makes 4 servings.
Nutrition: One serving 70 cal, 3.6 g fat (sat .3 g), 8 mg chol, 164 mg sod, 3 g fiber, 3 mg iron, .6 mg zinc