1. Divide challah dough in half and roll each half into a large rectangle. With a pizza cutter, cut the rectangle in half and then into one-inch (two- and- a- half-centimeter) strips. (Each rectangle will yield 16 strips.) Roll each strip into a rope and twist into a knot (similar to a small challah roll). Continue with remaining dough.
2. Brush knots with olive oil and let rise for approximately half an hour. Halfway through the rising, preheat the oven to 400 degrees Fahrenheit (200 degrees Celsius).
3. Meanwhile, prepare the garlic. In a small saucepan, place oil and garlic. Cook the garlic gently in the oil (this takes the raw edge off the garlic) for one to two minutes. Add the parsley and salt. Mix together. Remove from heat and set aside.
4. After knots have risen, place in preheated oven and bake for 14 minutes, rotating trays after seven minutes. Remove from oven and brush generously with garlic-oil mixture while still hot.