theres a lot going on in this thread with a lot of concepts and controversial ideas.
in general we boil dme with hops to get the hop oils out of the hops and into the beer.
the only reason i ever saw to not boil beer is for time reasons.
thus i switched to HME kits for many many years.
however these kits get better with steeped grains (
Steeping Grains for Extract Beer Brewing)
and with hop teas as stated above. i have even used them in partial mashes where they work great for bittering an unhopped boiled liquor. then added dry hops or whirlpooled hops for flavor but at that point there is no benefit of time. once you start adding hop teas, and steeped grains to these kits its no longer 15 min brew day and its closer to 1 hour extract boils. and those kits are much cheeper than any muntons or coopers or MJ's. kits. . once you start mashing base malts for these kits you might as well be doing partial mash BIAB on a stove top. whcih although taste great are a ton of work and take hours compared to adding a gallon of water to a can of HME.
if you are going to boil your hops for any amount of time you might as well boil them in at least some DME. youll get better use of the hops . why do you not want tpo boil the dme. if its because of color or twang try late addition. if your dme is fresh which is likely(DME has a long shelf life if kept dry- prolly the longest of all ) if its not a kit and the seller is reputable then there wont be twang.
brewers friend has optionsm for late addition and short boil.
if you are looking for fast brewing try shake n brew (i have heard of mix results)
try 30 min amarillo pale ale.
heres a 15 min cascade ale:
https://www.homebrewtalk.com/threads/15-minute-cascade-pale-ale.210253/
i forgot who gave me this recipe but its a great very quick brew day. and makes great beer
6 lbs breiss golden light dme
1 oz magnum hops
2 packs of 34/70 or 1 cup of 3470 slurry from last batch
(the dme, hops and yeast can be varied to suit your taste)
optional .... add 1 lb rice syrup solids or dextrose to bump abv and dry the beer out
Boil 3 gal filtered water, add hops, remove from flame and stir in at least 1 lb dme. return to boil and boil for ONLY 20 mins. At last 5 min remaining, add the remaining dme and , if using, the rice syrup solids or dextrose.
Cool the wort, use ice cold water(36 degrees) to bring the volume to 5 gal and the temp to pitchimg range. (this is a great advantage to speed up extract brewing. use ice cold top up water instead of chilling the wort in ice bath or with chiller. ) , oxygenate, pitch the yeast and place in your fermentation chamber.
Note: 20 min boil is enough.
in brewersfriend with a 20 min 3 gallon boil with 1 lb of dme and 1 oz of hops pellets makes this theoreticlly around 25 ibus.
this is a great short brew day beer.