In a saucepan, combine 1 cup sugar and cornstarch; add milk, egg yolks, butter or margarine, and 1 tablespoon lemon peel. Cook and stir over medium heat until thickened and bubbly; cook and stir 2 minutes more. Remove from heat; stir in lemon juice.
Transfer to a bowl; cover surface with plastic wrap and refrigerate until cool.
When cool, stir sour cream and blueberries into mixture; pour into pastry shell.
Cover and chill at least 4 hours.
If desired, stir a little lemon peel into sweetened whipped cream. Pipe or spoon atop pie. Garnish with lemon slices, if desired.
NOTE: If you use soy milk, dairy-free margarine, soy sour cream, and Cool Whip in place of the whipped cream this can be dairy-free.

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Nutrition Facts

Per Serving Per 100 g

Amount Per 1 Serving
Calories	353.22 Kcal (1479 kJ)
Calories from fat	177.57 Kcal
		% Daily Value*
Total Fat	19.73g	30%
Cholesterol	78.48mg	26%
Sodium	118.09mg	5%
Potassium	135.48mg	3%
Total Carbs	39.48g	13%
Sugars	20.47g	82%
Dietary Fiber	1.38g	6%
Protein	5.79g	12%
Vitamin C	6.7mg	11%
Vitamin A	0.1mg	2%
Iron	1.2mg	7%
Calcium	59.3mg	6%

Amount Per 100 g
Calories	231.07 Kcal (967 kJ)
Calories from fat	116.16 Kcal
		% Daily Value*
Total Fat	12.91g	30%
Cholesterol	51.34mg	26%
Sodium	77.25mg	5%
Potassium	88.63mg	3%
Total Carbs	25.83g	13%
Sugars	13.39g	82%
Dietary Fiber	0.9g	6%
Protein	3.79g	12%
Vitamin C	4.4mg	11%
Iron	0.8mg	7%
Calcium	38.8mg	6%

* Percent Daily Values are based on a 2000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.
Find out how many calories should you eat.