Step 1

Heat a nonstick skillet over medium heat. Melt butter in the hot skillet. Season tuna steaks with salt and pepper and place in the skillet. Cook for 3 to 4 minutes per side. Remove to a serving plate and keep warm.

Step 2

Add half-and-half and spreadable cheese to the same skillet and stir until incorporated. Add lemon juice. Set 2 tablespoons of the sauce aside. Add spinach to the remaining sauce in the skillet and cook until wilted, 1 to 2 minutes.

Step 3

Divide spinach between 2 plates and place tuna steaks on top. Serve reserved sauce over the steaks.