I think what you may be looking at are user-submitted recipes. There is a place to click on the page for the recipe, to see the nutritional breakdown for each ingredient used in a recipe. Both of the recipes I looked at, call for what seems to be a large amount of nuts, for a proportionately small amount of yogurt. For example, one recipe says 1/2 cup walnuts. That is a seriously LARGE quantity of nuts! But then there's only 4 oz. of yogurt. Plus 1/2 cup banana and 1/2 cup apple. That's an awful lot of "add-in's" for only 4 oz. yogurt. With that much "stuff", the yogurt looks like more of a topping for a bowl full of nuts and fruit.
So perhaps the person who entered the recipe chose the wrong quantities for the ingredients and maybe didn't know how to go back in there and fix it. Could have intended to choose 1/2 OZ. of walnuts, for example.
I think it's fabulous that Spark allows us to enter our own recipes, and also to share them with other members if we so choose. But at the same time, you need to be a little careful with the user-entered recipes, because there may be some mistakes in the quantities or the nutritional information etc. It's the same thing with the Nutrition Tracker; you have to check the user-entered stuff because people sometimes don't enter things correctly. Some people are only concerned with the calorie count for example, and don't bother entering the carbs, fat, protein etc.