Combine 1-1/2 cups flour, undissolved yeast, sugar, salt, Italian herb seasoning and garlic powder in large mixer bowl. Add water and oil; beat 2 minutes on medium speed. Gradually add remaining 1-1/4 cups flour to make a stiff yet sticky dough. Beat in cheese and meatballs. Cover bowl and let rest 10 minutes.
Portion dough into 12 (2-1/2 inch) generously greased muffin cups OR 36 mini muffin cups using a scoop or two spoons (do not use paper liners). Cover and let rise 35 to 45 minutes. Dough will rise, but not double in size.
Bake in preheated 375°F oven for 20 to 25 minutes (17 to 20 minutes for minis) until well browned. Let cool on wire rack for 2 minutes. Run a knife around each roll to remove from pan. Serve warm. If desired, serve with marinara sauce for dipping. Refrigerate any leftovers.
Freezer Instructions: Completely cool fluffins and place in an airtight container to freeze. Thaw in the refrigerator. Microwave for 15 to 20 seconds and serve immediately.