Pumpkin Bars

Ingredients

• 1/2 c. flour
• 1/2 tsp. baking powder
• 1/4 tsp. salt
• 1/2 tsp. baking soda
• 1/2 tsp. cinnamon
• 1/2 tsp. ginger
• 1/2 tsp. nutmeg
• 1 c. walnuts, chopped
• 1/4 c. vegetable shortening
• 1 c. brown sugar
• 1/2 can pumpkin
• 2 eggs
• 1 tsp. vanilla