Spinach Maria - cooking recipe

Ingredients

1 (15 1/2 oz.) can spinach, drained
1 medium onion, finely chopped (optional)
1 Tbsp. butter or margarine
1 (8 oz.) cream cheese
3/4 to 1 c. Parmesan cheese
1/2 tsp. cayenne pepper (use more or less, depending on how you like it)

Preparation

You can use frozen spinach. Be sure there is no water in spinach.