1 lb. ground beef
3/4 tsp. oregano leaves
1/2 tsp. salt
1/8 tsp. pepper
1/8 tsp. garlic powder
3/4 c. shredded Mozzarella cheese
1 can (8 oz.) pizza sauce
36 slices cocktail rye bread

Lightly brown beef in large skillet; pour off drippings. Sprinkle meat with oregano, salt, pepper and garlic powder. Cool. Add Mozzarella cheese, stirring to combine. Spread 1 teaspoon pizza sauce on each slice of bread; top each with 1 tablespoon beef mixture. Bake in hot oven (400 degrees) 7 to 9 minutes. Serve immediately.