Clams With Crispy Ham and Butter Beans

Name: Clams With Crispy Ham and Butter Beans
Ingredients: ¼ cup extra-virgin olive oil; 6 slices Serrano ham or prosciutto; 3 spring onions or 1 large shallot, thinly sliced; 6 garlic cloves, thinly sliced; 2 Tbsp. double-concentrated tomato paste; 2 tsp. smoked paprika; 1 cup dry white wine; 4 lb. small clams (such as littleneck or Manila; about 44), scrubbed; 1 15-oz. can butter, cannellini, or other white beans, rinsed; 1 cup coarsely chopped parsley; 1 cup store-bought or homemade aioli or mayonnaise; 4 thick slices country-style bread, toasted