Deviled Eggs with cream

2 tablespoons butter 2 tablespoons olive oil 1 large Spanish onion , diced small 1 teaspoon sugar 12 eggs 1 cup nonfat yogurt , plain, Greek style, drained 1[...]

4 x hard-boiled Large eggs cooled, peeled,     and halved lengthwise 2 Tbsp. light lowfat sour cream 2 tsp light mayonnaise 2 Tbsp. finely-chopped fennel 2[...]