Cheesy Potato and Vegetable Frittata

INGREDIENTS

1 tbsp

olive oil , divided

1/2 cup

chopped (or sliced if you prefer) onion

1 clove

garlic , minced

2 cups

(about 4-5 small) red potatoes chopped into 1/2 inch thick cubes

2 cups

Kale , stalks removed and leaves torn up into smaller pieces (substitute: spinach, swiss chard)

large eggs

1/2 tsp

salt , plus more to taste

1/2 tsp

pepper , plus more to taste

2 cups

(about one head) chopped broccoli (substitute: cauliflower, zucchini, asparagus, etc.)

1 cup

chopped tomato

1/2

tomato , sliced

1/4 cup

shredded mozzarella cheese

2 tbsp

grated Parmesan cheese