Canned lemon pie filling typically contains a combination of lemon juice, sugar, water, cornstarch, natural and artificial ...
Try squeezing the juice from half of a large lemon ... canned cherry pie filling a homemade taste is to add more flavor. Use dried spices or flavor extracts to up the flavor without adding more sugar.
One was for a pie crust using lemon zest to give the pie a flavor boost. The second was for delicious homemade lemon curd as its filling rather than that rather unpleasant canned imitation.