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1
Heat the olive oil in a large, heavy-bottomed saucepan on medium heat.
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2
Add the onions, stir briefly to coat with oil and cook without stirring for 10-12 minutes.
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3
Flip so that the onions on the bottom of the pot are now on top, and cook for another 10-12 minutes.
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4
Flip one more time, lower heat and allow onions to caramelized until completely brown about 15 minutes gently stirring occasionally.
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5
Remove from heat and set aside.
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6
These can be reheated before you put the burgers together.
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7
In a large bowl, mix ground beef, onion powder, salt and pepper until just combined.
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8
Do not overmix, or your patties will be tough.
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9
Divide into six portions and form patties, without pressing too hard.
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10
They should be uniform in thickness.
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11
Smooth out any cracks using your fingers.
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12
Make these right before you grill them, so they stay at room temperature.
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13
Preheat your grill, grill pan or cast-iron skillet to high heat and add burger patties.
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14
If using a grill, cover with the lid.
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15
Cook until the crust that forms on the bottom of the burger releases it from the pan or grate about 2 minutes.
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16
Gently test, but don't flip it until it gets to this point.
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17
When burgers lift up easily, flip, add enough blue cheese to cover completely, close lid if using a grill, and cook on the other side for another 2-3 minutes for medium to medium rare.
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18
Remove patties carefully using a metal spatula and transfer to buns.
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19
Top with caramelized onions and bacon and serve immediately.
