Step 1

Preheat oven to 375°F. Coat a 9-inch pie pan with cooking spray.

Step 2

Heat oil in a large skillet over medium heat. Add onion; cook, stirring, until starting to soften, about 3 minutes. Add garlic; cook, stirring, for 1 minute. Add broccoli; cook, stirring, until the broccoli starts to soften, about 2 minutes. Remove from heat.

Step 3

Whisk eggs, milk, sour cream, salt and pepper in a large bowl. Fold in the broccoli mixture and cheese. Spoon into the prepared pie pan. Bake until set and golden, about 30 minutes. Let stand for at least 10 minutes before serving.