Spinach Bars - cooking recipe

Ingredients

4 Tbsp. butter
1 (10 oz.) pkg. frozen chopped spinach, thawed and drained
3 eggs
1 c. milk
3/4 c. flour
1 tsp. salt
1 tsp. baking powder
12 to 16 oz. sharp Cheddar cheese, finely grated
1 small onion, chopped
1/2 c. chopped fresh mushrooms

Preparation

Preparation Time: 10 to 15 minutes.
Cooking Time: 35 minutes. Serves 8 to 12.