Once upon a time, Catherine fell in love with an overpriced drink from Starbucks, which she would buy as often as she could afford, but it was a seasonal flavor, and seasons end. This particular season was fall, and this particular flavor was Pumpkin Spice coffee, which you've probably already deduced, given its power of seduction over American females far and wide.
She missed her drink so much, she endeavored to recreated the flavor on her own, investing her limited free time, experimenting like a mad scientist with cans of pumpkin pie filling and exotic spices. There were disasters, and then breakthroughs, and many pots for the whole family to clean.
Eventually, the recipe was perfected, and for months she had but one complaint: it's too chunky. She used bigger words, but the end result was that the residue from the pumpkin settled in her coffee so that finishing a cup of Pumpkin Spice coffee was never as good as starting it.
So she added a final step to her preparations: straining. After boiling her pumpkin pie filling with her secret blend of spices, she would strain the delicious goodness into a bottle, which when mixed in the coffee still created the desired flavor, but left no gritty mess at the bottom of her breakfast blend.
One day her husband walked through the kitchen during her process of straining and wondered aloud: "What do you do with the left overs?" He knew full well that she discarded the leftovers, since the refrigerator wasn't stuffed with tupperware brimmed with pumpkin pie filling, but he had a bit of thrifty hoarder in him, and it pained him to see perfectly good paid for product being discarded that might still have a use.
When he noticed later that week a bowl being filled with pumpkin pie filling, the sense of the coming season (Halloween!) enticed him to find some gluten free pie crusts on his next shopping stop. It had to be gluten free, of course, as her husband had been sucked into the current dietary fad with promises of curing the problems of non-celiac gluten sensitivity he never knew he had. Though he was loathe to spend $5.00 on 2 measly pie crusts, he overcame his reluctance and made the purchase with visions of desert and Thanksgiving in his head.
So he mixed up the leftovers with some condensed milk, a little sugar, a pinch of salt, and baked it at 450 for 15 minutes, then at 350 for 45 minutes, and it came out perfect, especially with some whipped cream on top.