Peel and cube sweet potatoes into ½-inch pieces. Chop the red bell pepper and onion similarly. Mince the garlic.

Heat olive oil in a large skillet over medium heat.

Add sweet potatoes, season with salt and pepper; sauté for 10-12 minutes until tender and slightly crispy.

Stir in onion and red bell pepper; cook for another 5 minutes until softened. Add minced garlic and sauté until fragrant.

If using spinach, add it now until wilted (about 1 minute).

Serve immediately, optionally topped with fried eggs or avocado slices.