Asparagus-Mushroom Frittata | Reader's Digest Canada

Ingredients

• 8 large eggs
• 1/2 cup whole-milk ricotta cheese
• 2 tbsp lemon juice
• 1/2 tsp salt
• 1/4 tsp pepper
• 1 tbsp olive oil
• 1 package frozen asparagus spears (thawed, 8 ounces)
• 1 large onion (halved and thinly sliced)
• 1/2 cup finely chopped sweet red or green pepper
• 1/4 cup sliced baby portobello mushrooms