Wrap each dried prune with a bacon strip (one strip can wrap approximately two prunes). Secure with wooden toothpicks if needed.
Bake the bacon-wrapped prunes in an oven at 200-250°C (390-480°F) for about 10 minutes until the bacon is browned and crispy. Alternatively, fry them in a skillet over medium-high heat for 8-10 minutes until crispy.
Remove crusts from the rye bread and cut into small squares.
Heat the bacon fat in a skillet over medium heat.
Fry the bread squares in the bacon fat on both sides until golden and crispy, about 2-3 minutes per side. Alternatively, brush the bread with bacon fat and bake in a 200°C (390°F) oven for 5 minutes.
Assemble the canapes by stacking in order: bread square, bacon-wrapped prune, then olive.
For elegant serving, replace wooden toothpicks with decorative skewers or canape picks.