CRUST:

1/2 c. all purpose flour
1/2 tsp. salt
1/2 tsp. baking powder
1/4 c. solid shortening (Crisco)
1/2 c. sour cream
1 egg

FILLING:

1 lb. ground beef
1 tsp. salt
1 tsp. oregano
1/4 tsp. garlic powder
1/2 c. chopped onion
1/2 c. chopped olives
6 oz. can tomato paste
4 oz. can mushrooms, undrained
1 - 1 1/2 c. shredded Mozzarella cheese

PREPARE CRUST: Combine first six ingredients in medium bowl. Stir until blended (60 to 70 strokes; batter will be slightly lumpy). Lightly grease and flour bottom and sides of 9" metal pie pan. Spread batter thinly on bottom and thickly up sides to within 1/4" of pan rim. (Crust at this point may be covered and refrigerated, unfilled up to 12 hours before filling and baking.)

PREPARE FILLING: Brown ground beef and drain. Combine all ingredients except cheese. Mix thoroughly. Spoon into crust. Bake at 425 degrees for 18 to 28 minutes, until crust is golden brown. Sprinkle with cheese; return to oven to melt cheese. Sprinkle with paprika or parsley flakes, if desired. Cool 5 minutes before serving.