Enchilada Casserole

I felt like making enchiladas and ended up with an awesome enchilada casserole instead because I got a little over excited about my veggies...can you blame a girl?1 tbsp olive oil1 1/2 cup diced onions1 cup diced bell pepper3 garlic cloves1 poblano pepper, diced1 jalapeno pepper, diced1 cup diced mushrooms15 oz diced tomatoes (one can fire roasted diced tomatoes)30