Preheat the oven to 375 degrees. Saute onions and garlic until tender, about 3-5 minutes. Grease a 10-inch pie plate lightly with olive oil and line with the red peppers.
In a large bowl, mix 1 cup cheese, the beef, 1/2 cup of the pesto (or salsa), the bread crumbs, eggs, cilantro, salt and pepper until just combined.
Press the meat mixture into the pepper-lined pie plate. Spread the remaining pesto (or salsa) over the top. Bake for 45-50 minutes.