Bewitched 1x14

Aunt Clara comes to visit when Samantha meets Darrin's parents or the first time, his mother, Phyllis feels pushed aside, but his father Frank likes Samantha, thinking she's a lovely girl. When her daughter-in-law serves a magnificent dinner, Samantha confesses that it was actually Aunt Clara who helped her with the food, and that she is still learning how to be a magnificent cook.