You could get a longer spoon to get to the bottom of the bag.
If you dont mind washing dishes you can carry an insulated plastic container. Soup like healthy choice, Select choice, hormel chili comes in these. They weigh 1 ounce. Easy mac comes in a lighter, .6oz cup. I cut the metal ring off. It just traps food.
A nut or a coffee can lid will fit on these depending on which plastic container.
If you only need to boil 1.5 cups, you could use a 12 oz Heineken can just to boil in. About 3 oz total less the plastic container. If you need up to 3 cups, boil in a 24oz Heineken can. About 4 oz total less the container.
I have built probably about 50 beer can stoves of different designs and I fianlly have a pressurized jet stove that will boil 1 cup with 10ml, 1.5 cups with 15 ml, 2 cups with 17.5 ml, 2.5 cups with 20ml of DN alcohol. 3 cups I think is about 25ml. Thats at sealevel 65dF h20 and is a rolling boil.
If your total boil for a day is 2 cups in the morning (1 for coffee, 1 for oatmeal) and 1.5 cups at night or 3.5 total, your daily alcohol usage would be about 30-35ml of alcohol. 30-35ml = around 1-1.15 fl ounces per day. Weight wise about 1 oz per day
Link to my setups..
With this one you also have an extra 12oz Heineken can.
I have changed this a little.