1. Heat olive oil in a small skillet over medium heat until shimmering. (See "Test Kitchen Tip" below.) Add rosemary sprigs, and cook 1 minute, turning with tongs halfway through. Transfer to a paper towel–lined plate to drain, and sprinkle with kosher salt. Let oil cool, and set aside 1/4 cup.
2. Combine cranberries and next 3 ingredients in a small bowl. Let stand 15 minutes. Whisk in honey and reserved 1/4 cup rosemary oil.
3. Combine brown rice and next 3 ingredients in a large bowl. Crush fried rosemary over cooked rice, add cranberry dressing, and toss to combine.
4. Let rice salad cool 30 minutes before serving, or cover with plastic wrap and chill up to 1 day. Let chilled salad stand at room temperature 15 minutes before serving.
Test Kitchen Tip: Test the readiness of the oil with one rosemary leaf (needle). It should start to sizzle. If not, wait a few seconds and test again.