Best place for CO trout in Breck/Vail/Avon/Edwards
Hope this is not too late for you. Although it's not fresh out of the Eagle River, Golden Eagle Inn in Beaver Creek has a great trout dish. It's a hazelnut encrusted fresh Idaho trout that is superb. It will run you somewhere around $22-$24.
Golden Eagle Inn
118 Beaver Creek Plz, Avon, CO 81620