The grocery store has bulk pecans on sale, which is great since you're planning on making 5 pecan pies for a wedding. How many pounds of pecans should you buy? First, determine what information you need to answer this question, then click here to display that info (along with oth info). 3 How many pecans are needed for each pie? Your recipe calls for 1 cups pecans per pie. But there is no cup measure 4 available, only a scale. How many pecans are in a pound? Perhaps the nutritional info from a bag of pecans would be helpful. Nutrition Facts Serving Size: 1 cup. halves (99 g) Servings per Containers about 2 Amount Per Serving Calories 684 Calories from Fat 596 % Daily Value Total Fat 71g 110% Saturated Fat 6g 31% Trans Fat Cholesterol Omg 0 %