Not in danger in Group A2', England's young attacking midfielder shone against the relegated Iceland side, who played most of the game with ten players.
England vs Iceland: Reaction as it is
Unlike the last-winded drama that brought them victory in September's reverse fixture, England only needed 20 minutes to prove their supremacy at Wembley.
In his first overseas debut, Foden''s cross challenged Declan Rice to deftly beat the excellent Ögmundur Kristinsson'.
Four minutes later, Mason Mount showed quick feet to finish off a smooth game pass inside the penalty area and it was made worse by Iceland's Birkir Sævarsson sacking after the hiatus.
Foden then scored two goals in five minutes and landed a long-range strike beyond Hannes Halldórsson, who was disabled after Jadon Sancho finished off a clever pass.
Simon Hart, UK correspondent
It was a very encouraging night for a fluid, focused England that was impressively connected with exciting young talents. Foden stood out for his terrific close control, glide run and slick pass; In addition, the dead ball set up Rice''s first international goal before leaving his goal for England with two late kicks. Jack Grealish was quite effective in Game 3 with his purposeful running and clever passing angles. Behind them, fellow striker Mount, along with Rice, had a positive and forward-looking presence in midfield. A positive way to end 2020'
Andri Yrkill Valsson, Iceland correspondent
A night to forget for Iceland. Last week's efforts paid off, and the absence of many key players didn't help, but the apparent lack of resilience was disappointing. The team has gone up against major teams in the past but this hasn't appeared at all tonight. There was no plan when the ball was won and % 23 possession says it all. Departure coach Erik Hamrén will be disappointed to leave after such a performance.
Phil Foden, England midfielder : " England for the first my goals Throwing means a lot to me. It would be better if the fans were here but I had a lot of fun. Everyone plays well, so you should do it whenever you get the opportunity. Do your best. We currently have many young talents, so the future looks bright. I am happy to be here and to play with this great team. "
From England manager Gareth Southgate Foden': "We thought it was a really good game for him tonight and I'm really glad we need to connect players like him with Jack, Mason and Harry [Winks]. We know what he's doing and is one of the few that will be really exciting for England in the years to come."
Iceland coach Erik Hamrén : "When teams like England play well, that can happen. Even Germany lost 6-0 against Spain' and I think they have the stats we have. For me attitude is very important and I wanted to have more than we have today."
Icelandic defender Kári Arnason : "It was one of the hardest games I've played in my career. They were right about it. They have a great team and they can pick whatever they want. It was really tough.] We missed a few kids playing in the Premier League and we don't have many of them."
England's midfielder Mason Mount on his long friendship with Declan Rice': "It's a special night for him, mostly he scored his first goal. Being there when he scores means a lot to both of us. We'd have parents. If allowed, they'd celebrate together. They still text each other at home. We know what we can do and try to get better and perform If we keep showing up, our ultimate goal is to win the trophy. EURO 2020."
• England have 21 wins in the last 23 home international competitions.
• The Three Lions have lost only three of the last 51 international competitors on their home soil.
• Foden's second goal was England's 100th goal under the Southgate boss.
• Iceland is still looking for their first points in the UEFA Nations League' (L10).
• Coach Hamrén''s reign ended with his team conceding 19 goals in seven matches.
England : Pickford; Walker (Mings 64), Maguire, Other; Trippier (Maitland-Niles 85), Mount, Rice, Foden, Saka; Kane (Abraham 76), Grealish (Sancho 76)
Iceland : Kristinsson (Halldorsson 46); B Sævarsson, Ingason, Árnason, Hermannsson; Sigurjónsson (Eyjólfsson 62), B Bjarnason (Jóhannesson 88), Pálsson, A Skúlason; Guðmundsson (Sigthórsson 73), Bödvarsson (Þorsteinsson 73)
The UEFA Nations League final tournament will take place from 6 to 10 October 2021. Teams will return to competitive action in the spring in the 2022 FIFA World Cup European Qualifiers.