Step 1

Preheat oven to 400° F. Prepare a 1.5-2 quart casserole dish by spraying with cooking spray.

Step 2

In a large skillet, add butter over medium-high heat. Once melted, add onion and cook until translucent. Add shrimp and cook for 1 minute per side. (Barely pink. They'll cook more in oven.)

Step 3

Reduce heat to low, remove shrimp and place on a cutting board. Roughly chop into smaller pieces.

Step 4

Add garlic to pan and cook, stirring often, for 1 minute. Increase heat to medium and add half and half, cream cheese, gruyere, 1/2 cup parmesan, lemon pepper seasoning, lemon juice and spinach. Stir until cheese is melted and everything is combined well. Add shrimp back to pan and stir in.

Step 5

Pour mixture into prepared dish and top with remaining 1/4 cup parmesan. Bake for 15-20 minutes or until bubbly and golden. (Broil for a couple minutes if it isn't as brown as you like on top.)

Step 6

Serve hot with sliced, toasted baguette or pita chips.