United's second group game of the Papa John's Trophy competition was against Everton U21s at a rain soaked Brunton Park.
Arsenal loanee Jonathan Dinzeyi made his debut at the heart of the defence, and there was a welcome return to action for the fit again Danny Devine.
The Toffees fashioned the first chance of the evening with just 15 seconds on the clock when Campbell jumped high to meet a ball from the centre cricle. Garcia controlled then ran into the area before stroking a 17-yard shot just past the angle of post and bar.
Another away passing move gave Dobbin the chance to overlap and he used Garcia to create space. Things seemed to stick as the defence closed in and Dinzeyi hooked it clear.
United showed for the first time on the evening when Riley and Bell pulled wide, but the delivery from the midfielder was easily gathered by Barrett.
Tenacity in the middle of the pitch from Charters from the clearance gave Clough a yard, but he also put it too close to the stopper.
The Cumbrians had the ball in the net on 13 minutes when a Clough free kick from the right flank was met by Feeney. The captain's downward header from close range was well saved by Barrett, but Young was there on the follow-up. His volley was also blocked, but Feeney pounced to swipe it over the line. The celebrations were cut short as the offside flag went up, possibly for the attempt from Young as he stepped out of the ruck.
Carlisle pressed forward with crosses from Riley, Bell and Toure needing attention, and there was a whispered shout for a penalty when Bell went down under pressure from Campbell. The officials looked, but quickly looked away.
More good home pressure saw Bell chopped again, and this time a free kick was awarded, tight by the byline. Clough whipped it in, low, hard and angled, and Young moved off his marker to connect with a fierce swipe. Barrett was equal to it with a stunning two-handed save.
Everton almost sprung the trap on 26 minutes when Dobbin rolled a deft pass beyond Dinzeyi into the area. McCallister was on the chase but Jensen was off his line sharply to get there just in the nick of time.
Another deep free kick from Clough found Toure on the left touchline, and he angled his run before going for glory. It had power, but it was always heading high.
United were a whisker away in the 39th minute when a cross from Jack Armer curled towards Young. His eight-yard header produced a top quality save from Barrett, as he clawed it from beneath the bar, but it sat up nicely for the striker to finish off. A spin off the greasy surface wrong-footed the front man and he sliced it into the side netting.
Riley and Charters sent long-range attempts wide of the mark ahead of the break, but the deserved goal finally came on 44 minutes when Riley dropped a shoulder to lose his man. Young touched the delivery with the neatest of flicks off his instep and Barrett could do nothing as it spun into his bottom corner.
The Blues were on the front foot at the start of the second period with a twist and turn from Toure that opened a path. He shot, but it was scuffed, and Butterfield cleared.
A second run from Toure down the left flank then took him beyond John. He fed it to Young, but his toe-poke flew into the Warwick.
Toure came again when he robbed possession deep inside Everton territory, but this time he took the shot on himself as he reached the edge of the area. John got enough of a boot on it to deflect it away.
McAllister showed strength and determination to keep possession when the Toffees attacked, and John strode onwards to deliver to the front stick. Dobbin ran across his man but Feeney did well to block from his clip.
Armer flashed one past the angle of post and bar as the hosts flooded forward once again, and Clough popped one at Barrett after he'd worked hard to ease into a gap.
Carlisle were reminded that there was still work to do when Warrington curled an accurate free kick into the mix. Astley made the run and he glanced it past Jensen, who had covered the angles. The stopper was able to watch as it skipped past his back post.
The hosts doubled their lead on 67 minutes when Riley launched a long throw into the box. Feeney got the initial touch and Young added to his own tally with a lovely nod over the stranded keeper.
Second year youth scholar Sam Fishburn came on to make his senior debut, when he replaced Zach Clough, and Manny Mampala also came on when he stepped up for Brad Young with 20 minutes left to play.
Lukas Jensen showed that he'd been concentrating when a long ball invited Dobbin to break clear. The glovesman took the ball and the man as he cleaned everything out.
Lewis Dobbin was gifted an opportunity as the clock ticked down when the home shirts gave up possession, but Jensen showed safe hands when a rasper came his way.
Toure caused problems late in the day when he worked his way from left to right before popping a pass into the area. It was cleared to Charters, and his cross was arrowing towards Fishburn until Welch stuck a boot on it.
Feeney was excellent at the other end when he charged down a Kouyate thunderbolt, and Toure was close when United broke in time added on. The keeper got a hand to his placed shot to palm it away.
That was that for clear-cut chances as the Cumbrians took their group points tally to five with the Morecambe away game left to play next month.
Carlisle United - Young (44, 67)
Carlisle United - Toure (55)
Carlisle United - Jensen, Devine (Whelan 64), Dinzeyi, Feeney (c), Armer, Riley, Charters, Clough (Fishburn 68), Toure, Young (Mampala 68), Bell. Subs - Norman (gk), Ellis, Guy, Mellish.
Everton U21 - Barrett, Astley, Garcia (Kouyate 66), McAllister, John, Anderson, Whitaker (Butterfield 46), Price (Warrington 46), Dobbin, Welch, Campbell. Subs - Leban (gk), Quirk, Mills, Hughes.
Referee - Sebastian Stockbridge
Assistant Referee 1 - Paul Graham
Assistant Referee 2 - Conor Brown
Fourth Official - Paul Marsden
Observer - Scott Duncan
Attendance - 875 (45)