Total time: 10 minutes, plus chill time.
2 c brown sugar
1/2 c butter
1/2 c milk
3 c oats
1/2 c pb
2 tsp vanilla
Microwave milk on high for 30 seconds. Set aside.
In your largest mixing bowl that will fit in the microwave, microwave your stick of butter on high for 1 minute. Remove and add warmed milk and brown sugar. Stir well, until all the sugar lumps are gone (about 40 strokes).
Microwave the whole lot on high for 6 minutes. Do not stop, do not stir. Remove and add peanut butter and vanilla. Stir until smooth. Add oats and stir, stir, stir. Take a break and stir some more. You need to stir until it starts to feel stiff.
Scoop by the spoonful onto wax paper or other nonstick surface, 2-3 inches apart. Cool completely in the refrigerator (1-4 hours).
Brilliantly easy.