This recipe is adapted (to include pumpkin) from this Molten Butterscotch Cake recipe, from Betty Crocker. I tried it last week with Kraft caramel bits instead of butterscotch, which you could also try. It was really good, though it didn't rise as much.
Pumpkin Butterscotch Molten Lava Cakes - https://thefoodcharlatan.com/pumpkin-butterscotch-lava-cakes-recipe/