Castilian-Style Passover Potato Casserole

6 medium baking potatoes (about 2 pounds)
1/2 cup plain, low-fat yogurt
2 tablespoons margarine or butter
1/4 to 1/2 teaspoon salt
1/8 teaspoon ground red pepper
2 beaten eggs
3/4 cup herbed feta cheese or plain feta cheese
1/4 cup water
1 (10 ounce) package pre-washed spinach
1/4 teaspoon paprika

Peel and quarter potatoes.

In a large saucepan cook potatoes, covered, in a small amount of boiling water for 25 minutes or until tender. Drain potatoes. Mash drained potatoes with a potato masher or beat with an electric mixer on low speed. Add yogurt, margarine or butter, salt, and red pepper; beat just until combined. Add eggs; beat with an electric mixer on low speed for 1 minute or until fluffy. Fold in 1/2 cup of the feta cheese.

Heat oven to 425 degrees F.

In a 12-inch skillet bring the 1/4 cup water to boiling; add spinach to skillet. Toss spinach for about 1 minute or until spinach is slightly wilted; drain. Press out excess liquid. Coarsely chop spinach.

Spread half of the potato mixture into a light greased 2-quart rectangular baking dish. Laye spinach on top; sprinkle with remaining feta cheese. Spread remaining potato mixture on top and sprinkle with paprika.

Bake, uncovered, for 15 minutes or until top is lightly browned.

Makes 8 side-dish servings.