To make the stuffing, bring water, 1 teaspoon olive oil and ⅛ tsp salt to a boil. Stir in couscous, stir, cover, remove from heat and allow to sit for 10 minutes. Fluff with a fork and add lemon juice and additional ⅛ tsp salt; set aside.
In a medium skillet, heat remaining teaspoon olive oil over medium heat. Once hot, add the lamb and using a wooden spoon, break up the meat and cook 4-6 minutes or until just barely pink; drain fat. Add the onion, garlic, rosemary, oregano, ¼ teaspoon salt, and pepper. Cook an additional 3-4 minutes or until onion is tender.
In a large bowl, combine the couscous and lamb mixture; mix in 3 ounces of feta. Spoon the filling into each bell pepper and arrange on a baking sheet. Top each stuffed pepper with a teaspoon of crumbled feta.
Bake the peppers for 20-25 minutes or until bell peppers are tender and stuffing is hot throughout.
Meanwhile, combine tzatziki ingredients in a small bowl. Serve tzatziki with hot stuffed peppers.
Notes
Based on my friend Kelly and Eric's recipe creation!