How to Make It
In a Dutch oven, heat the oil over moderately low heat. Add the onions and cook, stirring occasionally, until translucent, about 5 minutes. Add the garlic, paprika, cayenne, and oregano and cook, stirring, until fragrant, about 1 minute.
Stir in the pimientos, tomatoes, squash, water, and salt and bring to a simmer. Cook the stew, covered, stirring occasionally, until the squash is almost tender, about 15 minutes. Uncover and simmer vigorously until almost no liquid remains in the pan, about 5 minutes. Add the beans and corn and cook until the corn is just tender, about 5 minutes. Stir in the basil.
Add one cup of diced ham along with the beans and corn.
Use peeled, cubed pumpkin or acorn squash instead of the butternut squash.